1	cisco.com	
2	isi.edu	
3	microsoft.com	
4	ericsson.com	
5	nokia.com	sip1.ext.nokia.com:5060
6	juniper.net	
7	nortelnetworks.com	
8	sun.com	
9	lucent.com	
10	us.ibm.com	guzzle-02.watson.ibm.com:5060
11	acm.org	
12	cs.columbia.edu	cocoa.cc.Columbia.EDU:5060
13	bbn.com	
14	nortel.com	
15	motorola.com	
16	intel.com	
17	qualcomm.com	yagatta3.qualcomm.com:5060
18	yahoo.com	
19	att.com	
20	research.att.com	
21	eng.sun.com	
22	verisign.com	
23	isode.com	:0
24	gmail.com	
25	cs.ucl.ac.uk	
26	dynamicsoft.com	
27	dbc.mtview.ca.us	
28	ieee.org	
29	watson.ibm.com	guzzle-02.watson.ibm.com:5060
30	siemens.com	
31	merit.edu	
32	innosoft.com	SERVFAIL
33	baynetworks.com	
34	harvard.edu	
35	icir.org	
36	openldap.org	
37	cs.ucla.edu	server.sip.ucla.edu:5060
38	lab.ntt.co.jp	
39	stevecrocker.com	
40	redback.com	
41	rsasecurity.com	
42	neustar.biz	
43	bbiw.net	
44	parc.xerox.com	
45	alcatel.be	
46	novell.com	
47	netscape.com	
48	isi.org	
49	hls.com	SERVFAIL
50	cmu.edu	
51	w3.org	
52	nist.gov	
53	mit.edu	W92-130-DMZ-SIP-PROXY-1.MIT.EDU:5060
54	isc.org	asterisk.isc.org:5060
55	aciri.org	
56	vnet.ibm.com	guzzle-02.watson.ibm.com:5060
57	nsn.com	
58	hp.com	
59	umich.edu	lcs.umich.edu:5060
60	ipsilon.com	SERVFAIL
61	netlab.nec.de	
62	xylogics.com	
63	vigilsec.com	
64	olddog.co.uk	
65	lcs.mit.edu	W92-130-DMZ-SIP-PROXY-1.MIT.EDU:5060
66	kisa.or.kr	
67	thinkingcat.com	
68	roke.co.uk	
69	jck.com	
70	apnic.net	voip.apnic.net:5060
71	um.cc.umich.edu	NXDOMAIN
72	psg.com	splat.psg.com:5060
73	alum.mit.edu	W92-130-DMZ-SIP-PROXY-1.MIT.EDU:5060
74	tellabs.com	
75	rtfm.com	
76	iprg.nokia.com	sip1.ext.nokia.com:5060
77	grc.nasa.gov	
78	ftp.com	
79	cs.utk.edu	SERVFAIL
80	alvestrand.no	
81	alcatellucent.com	SERVFAIL
82	snmp.com	SERVFAIL
83	samsung.com	
84	cs.berkeley.edu	
85	uninett.no	sip.uninett.no:5060
86	tis.com	
87	orangeftgroup.com	
88	mci.net	
89	ibr.cs.tubs.de	
90	belllabs.com	
91	tzi.org	dairyman.informatik.uni-bremen.de:5060
92	imc.org	
93	extremenetworks.com	
94	docomolabsusa.com	NXDOMAIN
95	cray.com	
96	cp10.es.xerox.com	
97	bellcore.com	
98	isl.rdc.toshiba.co.jp	
99	huawei.com	
100	entrust.com	
101	ctron.com	
102	bt.com	e03epool01.domain1.systemhost.net:5060
103	bmc.com	
104	rsa.com	
105	psc.edu	
106	pobox.com	
107	nominum.com	mercury.nominum.com:5060
108	itd.nrl.navy.mil	
109	digitalfountain.com	
110	cnri.reston.va.us	
111	cable.comcast.com	
112	zurich.ibm.com	guzzle-02.watson.ibm.com:5060
113	zk3.dec.com	
114	vpnc.org	
115	tislabs.com	
116	spyrus.com	
117	sparta.com	
118	inria.fr	softswitch.inria.fr:5060
119	avaya.com	sip.avaya.com:5060
120	apple.com	
121	alcatel.com	
122	ntt20.ecl.net	
123	nortel.ca	
124	funet.fi	
125	ee.lbl.gov	
126	psi.com	
127	procket.com	
128	innovationslab.net	
129	dataconnection.com	
130	cac.washington.edu	ccs.cac.washington.edu:5061
131	bunyip.com	
132	auckland.ac.nz	
133	wellfleet.com	
134	uu.net	
135	ripe.net	sip.ripe.net:5060
136	research.telcordia.com	
137	nri.reston.va.us	NXDOMAIN
138	nomadiclab.com	
139	newbridge.com	
140	netapp.com	
141	mcimail.com	
142	eb2bcom.com	
143	dial.pipex.com	
144	darpa.mil	
145	broadcom.com	
146	ascend.com	
147	145.net	
148	verisignlabs.com	tincan.verisignlabs.com:5060
149	udel.edu	
150	townsley.net	
151	thumper.bellcore.com	NXDOMAIN
152	teliasonera.com	
153	tari.toshiba.com	
154	surfnet.nl	sip.showcase.surfnet.nl:5060
155	rose.hp.com	
156	pi.se	
157	nexthop.com	
158	movaz.com	
159	jp.panasonic.com	
160	it.uc3m.es	marge.uc3m.es:5060
161	iijlab.net	
162	hotmail.com	
163	erg.abdn.ac.uk	
164	enterasys.com	
165	ecitele.com	sip.ecitele.com:443
166	cybercash.com	
167	cs.helsinki.fi	
168	cablelabs.com	
169	boeing.com	
170	andrew.cmu.edu	
171	alcatellucent.be	
172	acc.com	
173	worldnet.att.net	
174	verizon.com	
175	sprint.net	
176	nic.ddn.mil	NXDOMAIN
177	mcdata.com	
178	marconi.com	
179	mail.bellcore.com	NXDOMAIN
180	iki.fi	
181	francetelecom.com	
182	fnal.gov	
183	expmath.uniessen.de	
184	estacado.net	lt.estacado.net:5060
185	email.mot.com	
186	advanced.org	
187	zte.com.cn	
188	ucdavis.edu	sip-gw1.ucdavis.edu:5060
189	telcordia.com	
190	sgi.com	
191	raleigh.ibm.com	guzzle-02.watson.ibm.com:5060
192	polycom.co.il	
193	pahv.xerox.com	
194	nuovasystems.com	
195	nesser.com	
196	maillennium.att.com	
197	internic.net	
198	ics.uci.edu	
199	icair.org	
200	exmsft.com	
201	etri.re.kr	
202	emc.com	
203	cryptopro.ru	
204	columbia.edu	cocoa.cc.Columbia.EDU:5060
205	bucknell.edu	SERVFAIL
206	ans.net	
207	usc.edu	
208	twg.com	
209	reefpoint.com	SERVFAIL
210	rad.com	
211	phys.uu.nl	
212	oryx.com	
213	orion.ncsc.mil	
214	ninebynine.org	
215	netsol.com	
216	mordor.stanford.edu	sip2.Stanford.EDU:5060
217	mitre.org	
218	mirsa.inria.fr	softswitch.inria.fr:5060
219	mci.com	csuns01.wcomnet.com:5060
220	lbl.gov	
221	laposte.net	
222	internet2.edu	voice.internet2.edu:5060
223	internaut.com	
224	interlinknetworks.com	
225	fhmuenster.de	
226	es.net	
227	cs.cornell.edu	SERVFAIL
228	cs.arizona.edu	SERVFAIL
229	cosinecom.com	
230	comcast.net	
231	cl.cam.ac.uk	
232	ciena.com	
233	bull.net	
234	brooktrout.com	
235	boombox.micro.umn.edu	
236	world.std.com	
237	wide.ad.jp	
238	vivacenetworks.com	
239	tm.uka.de	
240	telia.fi	NXDOMAIN
241	switch.ch	anubis.switch.ch:5060
242	starentnetworks.com	SERVFAIL
243	sonusnet.com	
244	sfc.wide.ad.jp	
245	rwhois.net	
246	qwest.com	
247	ptt.lcs.mit.edu	NXDOMAIN
248	proteon.com	
249	oracle.com	
250	nma.com	
251	nextbeacon.com	
252	neonym.net	
253	mindspring.com	sip.earthlink.net:5060
254	livingston.com	
255	josefsson.org	
256	jabber.org	
257	iubremen.de	
258	hxr.us	
259	hifn.com	
260	google.com	
261	fore.com	SERVFAIL
262	eu.panasonic.com	
263	elettra.trieste.it	
264	earthlink.net	sip.earthlink.net:5060
265	dxcoms.cern.ch	NXDOMAIN
266	cup.hp.com	
267	corp.home.net	
268	computer.org	
269	catarina.usc.edu	
270	casc.com	
271	bnr.ca	
272	bloomberg.net	
273	azairenet.com	
274	archrock.com	
275	aol.com	
276	adobe.com	voipproxy1.adobe.com:5061
277	vix.com	
278	txc.com	
279	toshiba.co.jp	
280	stuartcheshire.org	
281	ssh.com	
282	spider.co.uk	
283	sophia.inria.fr	softswitch.inria.fr:5060
284	sm.sony.co.jp	
285	sipeerior.com	
286	sharplabs.com	
287	sendmail.com	
288	secstan.com	
289	pesa.com	
290	packetizer.com	
291	pa.dec.com	
292	overturenetworks.com	
293	oefeg.at	
294	nlnetlabs.nl	sip.nlnetlabs.nl:5060
295	nlanr.net	
296	levkowetz.com	
297	level3.net	
298	laurelnetworks.com	
299	jhuapl.edu	
300	ipinfusion.com	
301	il.ibm.com	guzzle-02.watson.ibm.com:5060
302	ibm.com	guzzle-02.watson.ibm.com:5060
303	herriot.com	
304	greenbytes.de	
305	gblx.net	peenum2.vpeer.gblx.net:5061
306	force10networks.com	
307	fokus.fraunhofer.de	sipo.fraunhofer.de:5060
308	epl.ericsson.se	
309	epilogue.com	
310	enum.at	sip.at43.at:5060
311	ennovatenetworks.com	
312	eng.xyplex.com	
313	cygnacom.com	
314	csperkins.org	
315	cs.wisc.edu	
316	criticalangle.com	SERVFAIL
317	corrigent.com	
318	commworks.com	SERVFAIL
319	cnnic.cn	
320	brocade.com	
321	baltimore.ie	
322	bah.com	
323	avici.com	
324	arbor.net	
325	alcatel.fr	
326	airespace.com	
327	3com.com	
328	yahooinc.com	
329	wrl.dec.com	
330	wipro.com	
331	win.tue.nl	
332	vandyke.com	
333	unix.ka9q.ampr.org	NXDOMAIN
334	theory.lcs.mit.edu	W92-130-DMZ-SIP-PROXY-1.MIT.EDU:5060
335	telstra.net	
336	telchemy.com	
337	tekelec.com	
338	tandem.com	
339	taligent.com	
340	synoptics.com	
341	sympatico.ca	
342	stewe.org	
343	spyglass.com	
344	softarmor.com	
345	snmpinfo.com	
346	shastanets.com	
347	sandelman.ottawa.on.ca	
348	sandburst.com	
349	rice.edu	
350	relay.prime.com	
351	relay.nswc.navy.mil	NXDOMAIN
352	ralvm6.vnet.ibm.com	guzzle-02.watson.ibm.com:5060
353	piermont.com	
354	pdnets.com	
355	packetdesign.com	
356	pacbell.net	
357	octel.com	
358	nsipo.nasa.gov	
359	nisc.sri.com	NXDOMAIN
360	networkresonance.com	
361	nc.rr.com	
362	munnari.oz.au	
363	levers.enet.dec.com	NXDOMAIN
364	labn.net	
365	kurtis.pp.se	
366	isl.ntt.co.jp	
367	ipverse.com	
368	iet.unipi.it	
369	ieca.com	
370	icn.siemens.de	
371	hyperthought.com	
372	hitachieu.com	
373	hiof.no	sip.hiof.no:5060
374	gte.com	
375	greendragon.com	
376	fokus.fhg.de	sipo.fraunhofer.de:5060
377	fnc.fujitsu.com	
378	flarion.com	
379	flab.fujitsu.co.jp	
380	era.ericsson.se	
381	equinix.com	
382	enst.fr	sipmob.enst.fr:5060
383	ee.washington.edu	ccs.cac.washington.edu:5061
384	ecs.soton.ac.uk	
385	dsv.su.se	incomingproxy2.sip.su.se:5060
386	daboo.name	
387	cs.purdue.edu	
388	cs.colostate.edu	sipx2.colostate.edu:5060
389	crt.xerox.com	
390	certicom.com	
391	cc.gatech.edu	
392	cantata.com	
393	bridgewatersystems.com	
394	axiowave.com	
395	argon.com	
396	arastra.com	
397	anl.gov	
398	alis.com	
399	adtran.com	
400	adacel.com.au	
401	actelis.com	
402	xedia.com	
403	xcert.com	
404	windows.microsoft.com	
405	wcom.com	
406	washington.edu	ccs.cac.washington.edu:5061
407	wais.com	
408	viagenie.qc.ca	
409	uvsc.edu	
410	usa.alcatel.com	
411	us.oracle.com	
412	us.axway.com	
413	uiuc.edu	
414	tycho.ncsc.mil	
415	tellium.com	
416	telio.no	sip.telio.no:5060
417	surrey.ac.uk	
418	sunet.se	
419	stealth.net	sip.stealth.net:5060
420	sprintcorp.com	SERVFAIL
421	signatustechnologies.com	
422	siara.com	
423	sg.panasonic.com	
424	senie.com	
425	secureendpoints.com	
426	securecomputing.com	
427	saic.com	
428	safenetinc.com	
429	sabre.bellcore.com	NXDOMAIN
430	qsun.att.com	
431	qlogic.com	
432	psilink.com	
433	process.com	
434	pingtel.com	sbc.pingtel.com:5060
435	picosnet.com	
436	perceval.net	ratri.perceval.net:5061
437	pec.etri.re.kr	
438	pearlcrescent.com	
439	partner.samsung.com	
440	orangeft.com	
441	omnitor.se	sip.omnitor.se:5060
442	ogud.com	
443	oar.net	
444	ntt.com	
445	nsrc.org	
446	newcastle.ac.uk	
447	netlab.hut.fi	
448	megisto.com	
449	measurementfactory.com	
450	mazunetworks.com	
451	malamud.com	
452	mail.cox.smu.edu	SERVFAIL
453	lucky.net	
454	lotus.com	
455	lloyd.com	
456	lerc.nasa.gov	
457	lanl.gov	
458	laas.fr	
459	kth.se	sip1.sys.kth.se:5060
460	kt.co.kr	
461	kohala.com	
462	kddilabs.jp	
463	kddi.com	
464	jprs.co.jp	
465	jp.yokogawa.com	
466	iss.isl.melco.co.jp	
467	isoc.org	
468	isima.fr	
469	ipunplugged.com	
470	iphighway.com	
471	interlocale.com	
472	intelliden.com	
473	insensate.co.uk	
474	inetcore.com	
475	hursley.ibm.com	guzzle-02.watson.ibm.com:5060
476	hprnd.rose.hp.com	
477	hplabs.hp.com	
478	hpl.hp.com	
479	home.net	
480	hill.com	
481	globalipsound.com	
482	gateway.mitre.org	NXDOMAIN
483	garr.it	voip-test2.dir.garr.it:5060
484	fdupont.fr	
485	epfl.ch	sip1.epfl.ch:5060
486	ekabal.com	
487	eecs.umich.edu	lcs.umich.edu:5060
488	ee.upenn.edu	vs1.voice.isc.upenn.edu:5060
489	east.sun.com	
490	east.ntt.co.jp	
491	denic.de	sip.denic.de:5060
492	deming.com	
493	delab.sintef.no	NXDOMAIN
494	cse.ucsc.edu	telecom-prod-sip-1.ucsc.edu:5060
495	cs.washington.edu	ccs.cac.washington.edu:5061
496	cs.ucsd.edu	sipp.ucsd.edu:5060
497	cs.ucsb.edu	
498	cs.ohiou.edu	
499	cs.curtin.edu.au	
500	cs.cmu.edu	
501	cs.auckland.ac.nz	
502	cosy.sbg.ac.at	
503	core.ecl.net	
504	compuserve.com	
505	commerce.net	
506	comm.mot.com	
507	columbia.sparta.com	
508	checkpoint.com	
509	cert.org	
510	cdt.org	
511	cc.bellcore.com	NXDOMAIN
512	brandenburg.com	
513	bcisse.com	
514	austhink.com	
515	andybierman.com	
516	ambernetworks.com	
517	alcatellucent.fr	
518	aland.bbn.com	
519	ajou.ac.kr	
520	aic.co.jp	
521	zv.fraunhofer.de	sipo.fraunhofer.de:5060
522	yas.com	
523	xerox.com	
524	webwasher.com	
525	wcom.net	
526	waseda.jp	
527	vodafone.com	
528	verizon.net	
529	veriwave.com	
530	verio.net	
531	umbc.edu	
532	ultra.enet.dec.com	NXDOMAIN
533	ucsd.edu	sipp.ucsd.edu:5060
534	ucop.edu	
535	ubiquitysoftware.com	sipfw.ubiquitysoftware.com:5060
536	tsystems.com	
537	tropos.com	
538	torrentnet.com	
539	topcross.ru	
540	tony.li	
541	tmit.bme.hu	
542	timestep.com	
543	tiac.net	sip.earthlink.net:5060
544	thefsb.org	
545	telin.nl	
546	telia.se	
547	telemancy.com	
548	tcb.net	
549	talarian.com	
550	sylantro.com	sip.sylantro.com:5060
551	sycamorenet.com	
552	sprintspectrum.com	
553	spirentcom.com	
554	song.fi	sip.song.fi:5060
555	sinett.com	SERVFAIL
556	sendmail.org	
557	san.rr.com	
558	rogers.com	
559	riverstonenet.com	
560	rim.com	
561	research.panasonic.com	
562	registro.br	
563	rare.nl	
564	radisys.com	
565	rad.co.il	
566	pureedge.com	
567	precept.com	
568	policyconsulting.com	
569	po.ntts.co.jp	
570	pmcsierra.com	
571	patton.nyser.net	
572	panasonic.de	
573	openss7.org	
574	oki.com	
575	oc.com	
576	nttv6.jp	
577	ntlworld.com	
578	nominet.org.uk	
579	nii.voskhod.ru	
580	nida.or.kr	
581	ni.umd.edu	NXDOMAIN
582	nevsky.net	
583	netcs.ucd.ie	NXDOMAIN
584	netconsult.ch	
585	nada.kth.se	sip1.sys.kth.se:5060
586	mur.at	
587	msn.com	
588	mrochek.com	
589	mo.msk.ru	
590	mimesweeper.com	
591	messagingdirect.com	
592	media.org	
593	mcsrlabs.org	NXDOMAIN
594	mcs.anl.gov	
595	maoz.com	
596	mail.ru	
597	mail.hust.edu.cn	
598	macchiato.com	
599	ludwig.sc.intel.com	
600	live.com	
601	lip6.fr	
602	level3.com	
603	lejonsson.com	
604	layer8.net	
605	l3com.com	
606	knu.ac.kr	
607	jpl.nasa.gov	
608	jnt.ac.uk	
609	jdscons.com	
610	it.aoyama.ac.jp	
611	isocore.com	
612	ins.com	sip.ins.com:5061
613	inner.net	
614	inmon.com	
615	infotecs.ru	
616	infoods.unu.edu	NXDOMAIN
617	infonet.com	
618	infn.it	
619	inetco.com	
620	icsalabs.com	
621	iana.org	
622	hotsip.com	
623	hns.com	
624	hexago.com	
625	helsinki.fi	
626	hco.ntt.co.jp	
627	hammerheadsystems.com	
628	gmu.edu	
629	gadzoox.com	
630	g11.org.uk	
631	fnc.gov	NXDOMAIN
632	farallon.com	SERVFAIL
633	factorts.ru	NXDOMAIN
634	f5.com	
635	euronet.nl	
636	etsi.fr	
637	erols.com	
638	equant.com	
639	eng.monash.edu.au	
640	elistx.com	
641	elevatemobile.com	
642	eisler.com	
643	eed.ericsson.se	
644	edwin.enet.dec.com	NXDOMAIN
645	ece.drexel.edu	SERVFAIL
646	ebina.hitachi.co.jp	
647	dotat.at	
648	dolby.com	
649	dnrc.belllabs.com	NXDOMAIN
650	dma.isg.mot.com	
651	diversinet.com	
652	dimacs.rutgers.edu	
653	digibd.com	
654	dgrtp.dg.com	NXDOMAIN
655	df.lth.se	
656	del.com	
657	dei.uc.pt	
658	cysols.com	
659	cs.unigoettingen.de	NXDOMAIN
660	cs.umd.edu	
661	cs.tcd.ie	
662	cs.stanford.edu	sip2.Stanford.EDU:5060
663	cs.colorado.edu	
664	cryptocom.ru	
665	cryptico.com	
666	consulintel.es	sip.consulintel.es.consulintel.es:5060
667	cnidr.org	
668	clark.net	
669	ckm.ucsf.edu	
670	chinamobile.com	
671	ccrle.nec.de	
672	cayman.com	
673	catalogix.ac.se	NXDOMAIN
674	cactus.ntt.jp	NXDOMAIN
675	bt.infonet.com	
676	bstormnetworks.com	SERVFAIL
677	bsdi.com	SERVFAIL
678	bjh21.me.uk	
679	bellsouth.com	
680	bell.ca	
681	bea.com	
682	baesystems.com	
683	bacon.gmu.edu	
684	autonomica.se	dagger.autonomica.se:5061
685	attbi.com	
686	atlas.arc.nasa.gov	
687	arrowpoint.com	
688	almaden.ibm.com	guzzle-02.watson.ibm.com:5060
689	allegronetworks.com	
690	alertlogic.net	
691	alaxala.com	
692	alantec.com	
693	aladdin.com	
694	airdata.com	SERVFAIL
695	agranat.com	
696	agilent.com	SERVFAIL
697	acmepacket.com	
698	accurate.com	
699	zoic.org	
700	zko.dec.com	
701	zev.net	
702	yy.anritsu.co.jp	
703	yahoo.co.jp	
704	xyplex.com	
705	xs4all.nl	
706	xebeo.com	SERVFAIL
707	wrc.xerox.com	
708	worldspot.com	
709	windriver.com	
710	well.com	
711	wdmsys.com	
712	watercove.com	
713	voltage.com	
714	vm.tau.ac.il	NXDOMAIN
715	violet.berkeley.edu	
716	vaughan.com	
717	valicert.com	
718	utkux1.utk.edu	SERVFAIL
719	usa.net	
720	unt.edu	
721	unituebingen.de	
722	uniroma2.it	
723	unet.umn.edu	
724	uk.ibm.com	guzzle-02.watson.ibm.com:5060
725	ualberta.net	
726	tzi.unibremen.de	NXDOMAIN
727	tzi.orgemail	NXDOMAIN
728	twnic.net.tw	
729	trw.com	
730	troll.no	
731	trl.ibm.co.jp	NXDOMAIN
732	transarc.com	
733	transactionware.com	
734	torque.pothole.com	NXDOMAIN
735	tns.co.jp	
736	tndh.net	
737	tilab.com	sip2.tilab.com:5060
738	tic.com	
739	thus.net	
740	thingmagic.com	
741	thefinks.com	
742	terisa.com	
743	teraoptic.com	
744	telseon.com	
745	telecomsys.com	
746	telebit.com	
747	tasc.com	SERVFAIL
748	taec.enet.dec.com	NXDOMAIN
749	syndesis.com	
750	sync.com	
751	swin.edu.au	
752	swift.com	
753	student.dei.uc.pt	
754	storigen.com	SERVFAIL
755	stanfordalumni.org	
756	stanford.edu	sip2.Stanford.EDU:5060
757	standardstrack.com	
758	stac.com	
759	sta.samsung.com	
760	ssh.fi	
761	ssc.govt.nz	
762	space.alcatel.fr	
763	sonoasystems.com	
764	smartpipes.com	
765	sm.luth.se	
766	site.uottawa.ca	
767	sit.fraunhofer.de	sipo.fraunhofer.de:5060
768	sipstation.com	
769	siemens.atea.be	NXDOMAIN
770	seawaynetworks.com	
771	sdsc.edu	
772	sbcglobal.net	
773	sanrad.com	
774	sandia.gov	
775	rz.tuclausthal.de	
776	royalbank.com	
777	routingloop.com	
778	rnid.org.uk	
779	rhyolite.com	
780	rex.yrp.nttdocomo.co.jp	NXDOMAIN
781	reuters.com	
782	redbacknetworks.com	SERVFAIL
783	redback.net	
784	rd.scei.sony.co.jp	
785	ray.lloyd.com	NXDOMAIN
786	rainfarm.com	
787	rainbowbridge.com	
788	radium.ncsc.mil	
789	quest.arc.nasa.gov	
790	qinetiq.com	
791	prep.ai.mit.edu	W92-130-DMZ-SIP-PROXY-1.MIT.EDU:5060
792	polycom.com	
793	planetspork.com	
794	pictel.com	
795	philips.com	
796	pfn.com	
797	pedestalnetworks.com	
798	ov.com	
799	osafoundation.org	
800	orionsec.com	
801	opsware.com	
802	openmarket.com	
803	onesparrow.com	
804	oclc.org	
805	oblix.com	
806	oasisopen.org	
807	nwu.edu	NXDOMAIN
808	nvuxr.cc.bellcore.com	NXDOMAIN
809	nttv6.net	
810	nrm.museum	
811	nomor.de	
812	nj.paradyne.com	NXDOMAIN
813	nisc.nyser.net	
814	nic.se	
815	neustar.com	
816	netzwert.ag	
817	netwrx1.nw1.com	NXDOMAIN
818	networktest.com	
819	netsmiths.com	
820	netrake.com	
821	netlab.tkk.fi	
822	netix.com	
823	netcom.com	sip.earthlink.net:5060
824	neda.com	
825	nec.com.au	
826	neart.org	
827	ncsu.edu	proxy.fi.ncsu.edu:5060
828	nca.or.kr	
829	nas.nasa.gov	
830	myri.com	
831	mrko.pe.kr	
832	monmouth.com	
833	miyabilabo.net	NXDOMAIN
834	mitton.com	
835	mirapoint.com	
836	metrocast.net	
837	metatel.com	
838	metaplex.com	
839	mediaone.net	
840	mbunix.mitre.org	NXDOMAIN
841	maxware.no	
842	math.nwu.edu	NXDOMAIN
843	martigny.ai.mit.edu	W92-130-DMZ-SIP-PROXY-1.MIT.EDU:5060
844	marimba.com	
845	mail.zjgsu.edu.cn	
846	mail.auburn.edu	SERVFAIL
847	magnolia.stanford.edu	sip2.Stanford.EDU:5060
848	madge.com	
849	ltsnet.net	
850	loc.gov	
851	lmco.com	
852	llnl.gov	
853	lkg.dec.com	NXDOMAIN
854	live555.com	
855	lightsand.com	
856	lexmark.com	
857	lemurnetworks.net	NXDOMAIN
858	law.berkeley.edu	
859	lachman.com	SERVFAIL
860	l3.com	
861	kom.auc.dk	
862	koganei.wide.ad.jp	
863	kayote.com	
864	kar.dec.com	NXDOMAIN
865	juno.com	
866	juniper.com	
867	jrc.it	
868	jp.ibm.com	guzzle-02.watson.ibm.com:5060
869	jp.fujitsu.com	
870	joelhalpern.com	
871	jnx.com	
872	jessica.stanford.edu	NXDOMAIN
873	jaist.ac.jp	
874	ixiacom.com	
875	itsec.com	
876	iso.org	
877	isl.mei.co.jp	
878	isd.3com.com	
879	ironbridgenetworks.com	SERVFAIL
880	iris.com	
881	ireland.sun.com	
882	invisible.net	
883	intoto.com	
884	intercomponentware.com	
885	info.cern.ch	
886	imtl.skku.ac.kr	
887	imag.fr	
888	iiidns.iii.org.tw	NXDOMAIN
889	ihtfp.com	penguin.ihtfp.com:5060
890	ifn.et.tudresden.de	
891	icesoft.com	
892	icann.org	
893	ibeam.intel.com	
894	iab.org	
895	hyervision.com	
896	huachucaemh8.army.mil	NXDOMAIN
897	hitachips.us	NXDOMAIN
898	hitachi.com	
899	hiit.fi	
900	hethmon.com	
901	hatterasnetworks.com	
902	hactrn.net	
903	gza.com	
904	gu.net	
905	grottonetworking.com	NXDOMAIN
906	gpaterno.com	
907	gmx.net	sip.gmx.net:5060
908	gemplus.com	
909	gateway.ssw.com	
910	garage.att.com	
911	ftm.disa.mil	
912	fsecure.com	
913	freegate.com	
914	fokus.gmd.de	
915	fiberlane.com	
916	exa.onlab.ntt.co.jp	
917	ewi.utwente.nl	SERVFAIL
918	europe.shiva.com	NXDOMAIN
919	esrgroups.org	
920	ericsson.fi	
921	erg.sri.com	
922	enstbretagne.fr	NXDOMAIN
923	enstbretagne	NXDOMAIN
924	engin.umich.edu	lcs.umich.edu:5060
925	empiretech.com	SERVFAIL
926	eme068.cow.melco.co.jp	
927	emcsw.com	home.eguy.org:5078
928	ellacoya.com	
929	eicon.qc.ca	NXDOMAIN
930	ee.technion.ac.il	
931	edelweb.fr	
932	ebooktechnologies.com	
933	east.isi.edu	
934	dsg.stanford.edu	sip2.Stanford.EDU:5060
935	drummondgroup.com	
936	doit.wisc.edu	
937	dkuug.dk	
938	directoryapplications.com	NXDOMAIN
939	diis.ddn.mil	NXDOMAIN
940	dc.com	
941	datanet.tele.fi	
942	dante.org.uk	
943	dankohn.com	
944	dafuer.com	
945	cyclonecommerce.com	
946	csse.monash.edu.au	
947	cselt.it	blade.cselt.it:5060
948	cse.nagoyau.ac.jp	NXDOMAIN
949	csam.lbl.gov	NXDOMAIN
950	cs.umn.edu	
951	cs.uiuc.edu	
952	cs.rice.edu	
953	cs.nrl.navy.mil	
954	cs.nott.ac.uk	
955	cs.hmc.edu	
956	crynwr.com	
957	counterpath.com	sip02.counterpath.com:5060
958	corp.webtv.net	
959	corp.sgi.com	
960	corecom.com	
961	coppermountain.com	
962	coombs.anu.edu.au	
963	connect.com.au	
964	comverse.com	
965	com21.com	
966	cns.ssu.ac.kr	
967	cnj.digex.net	NXDOMAIN
968	cnj.digex.com	
969	cni.org	
970	cmf.nrl.navy.mil	
971	clipcode.com	
972	citicorp.com	
973	citi.umich.edu	lcs.umich.edu:5060
974	cingular.com	
975	chirayu.org	
976	charter.net	
977	cert.sei.cmu.edu	NXDOMAIN
978	century.com	
979	celoxnetworks.com	
980	celion.com	
981	cc.titech.ac.jp	
982	canolajones.com	NXDOMAIN
983	caldera.usc.edu	
984	cabletron.com	
985	ca.afilias.info	
986	bytemobile.com	
987	bws.com	
988	brodia.com	
989	brixnet.com	
990	bradford.ac.uk	
991	boi.hp.com	
992	bitworking.org	
993	bisd.hitachi.co.jp	
994	av.it.pt	
995	attws.com	
996	atoga.com	
997	astart.com	
998	asl.dl.nec.com	
999	arubanetworks.com	
1000	aramis.rutgers.edu	
1001	applelink.apple.com	
1002	apocalypse.org	
1003	apache.org	
1004	antc.uoregon.edu	ses-uo.uoregon.edu:5060
1005	alumni.calpoly.edu	
1006	altn.com	
1007	altavistasoftware.com	
1008	alaxala.net	
1009	akamail.com	
1010	agere.com	
1011	afilias.info	
1012	aero.org	SERVFAIL
1013	adaptec.com	
1014	aarnet.edu.au	
1015	3amsoftware.com	
1016	zucotto.com	
1017	znyx.com	
1018	zmail.pt	SERVFAIL
1019	zhone.com	
1020	zetnet.co.uk	
1021	zephyrcorp.com	
1022	zensys.com	
1023	zelestra.com	
1024	yahoo.fr	
1025	xythos.com	
1026	xylint.co.uk	
1027	xylan.com	
1028	xx.lcs.mit.edu	W92-130-DMZ-SIP-PROXY-1.MIT.EDU:5060
1029	xten.com	phone.xten.com:5060
1030	xsoft.sd.xerox.com	NXDOMAIN
1031	xpertsite.com	SERVFAIL
1032	xiv.co.il	
1033	xedoc.com	
1034	xapiens.com	
1035	xacct.com	
1036	wzberlin.de	
1037	wsmrsimtel20.army.mil	NXDOMAIN
1038	worldlink.com	
1039	wnpv01.enet.dec.com	NXDOMAIN
1040	wiscvm.wisc.edu	NXDOMAIN
1041	wilmerhale.com	
1042	wildgrube.com	
1043	wildbear.on.ca	NXDOMAIN
1044	wesync.com	
1045	westridgenetworks.com	
1046	weidai.com	
1047	webweaving.org	
1048	web.de	sip-ha.web.de:5060
1049	wc.novell.com	NXDOMAIN
1050	wb.xerox.com	NXDOMAIN
1051	wang.com	
1052	voxeo.com	corpsip.voxeo.com:5060
1053	voltdelta.com	
1054	vodafoneus.com	NXDOMAIN
1055	vms.huji.ac.il	
1056	vixel.com	
1057	visi.com	messagingmail.visi.com:5060
1058	virtualworkshop.com	SERVFAIL
1059	virtu.nl	peering.speakup.nl:5060
1060	vineyard.net	
1061	vines.enet.dec.com	NXDOMAIN
1062	vinca.com	
1063	vijaygill.com	
1064	vibrant1.com	NXDOMAIN
1065	viataal.nl	
1066	vf.vodafone.co.uk	
1067	vertical.com	
1068	verizonwireless.com	
1069	verizonbusiness.com	
1070	verisat.no	
1071	verbaltek.com	
1072	vdtg.com	
1073	vasco.com	
1074	valinor.stanford.edu	sip2.Stanford.EDU:5060
1075	valinor.barrnet.net	
1076	vailsys.com	
1077	va.rr.com	
1078	v6security.com	
1079	uxc.cso.uiuc.edu	NXDOMAIN
1080	uunet.uu.net	
1081	utfors.se	
1082	utexas.edu	
1083	utdallas.edu	
1084	usr.com	
1085	usherbrooke.ca	
1086	uscisid.arpa	NXDOMAIN
1087	uscellular.com	
1088	usai.asiainfo.com	
1089	us.shiva.com	NXDOMAIN
1090	us.panasonic.com	
1091	us.fujitsu.com	
1092	uqam.ca	
1093	upenn.edu	vs1.voice.isc.upenn.edu:5060
1094	unsw.edu.au	
1095	unispheresolutions.com	
1096	unipr.it	
1097	unile.it	
1098	unidue.de	
1099	underscore.com	
1100	uncc.edu	
1101	unc.edu	proxy-2.rtc.unc.edu:5060
1102	umkc.edu	
1103	umdac.umu.se	
1104	umd.edu	
1105	ultra5.unile.it	
1106	ulticom.com	
1107	ulcc.ac.uk	
1108	uky.edu	
1109	ukerna.ac.uk	
1110	uitvm2.iinus1.ibm.com	NXDOMAIN
1111	uic.edu	
1112	uha.fr	sip.uha.fr:5060
1113	ufabc.edu.br	
1114	udel.arpa	NXDOMAIN
1115	udcast.com	
1116	ucolick.org	
1117	uci.edu	
1118	uci.arpa	NXDOMAIN
1119	ucbvax.berkeley.edu	
1120	ua21.example.com.	
1121	ua.pt	
1122	tx.rr.com	
1123	twcable.com	
1124	tuxedo.enet.dec.com	NXDOMAIN
1125	turnpike.com	
1126	turkuamk.fi	
1127	tuffit.com	
1128	tti.unipa.it	
1129	tt.dk	
1130	tsinghua.edu.cn	
1131	trustworks.com	
1132	trustdst.com	
1133	troikanetworks.com	
1134	trideaworks.com	
1135	transnexus.com	
1136	transattech.com	NXDOMAIN
1137	trace.wisc.edu	
1138	tomobikicho.cac.washington.edu	NXDOMAIN
1139	tomlinsongroup.net	
1140	tolsun.oulu.fi	NXDOMAIN
1141	toda.ricoh.co.jp	
1142	tno.nl	
1143	timetravellers.org	SERVFAIL
1144	timeplex.com	
1145	tillerman.to	NXDOMAIN
1146	tieo.saic.com	
1147	tid.es	
1148	tibco.com	
1149	tia.eia.org	
1150	ti.com	
1151	thyrsus.com	
1152	think.com	
1153	terena.nl	graham.terena.nl:5060
1154	tenetindia.com	
1155	tenet.edu	
1156	temic.com	
1157	tello.com	
1158	telecomitalia.it	
1159	tek.com	
1160	ted.ericsson.se	
1161	technologist.com	
1162	techmahindra.com	
1163	techknowware.com	NXDOMAIN
1164	techfak.unibielefeld.de	NXDOMAIN
1165	tcgould.tn.cornell.edu	NXDOMAIN
1166	tbssct.gc.ca	NXDOMAIN
1167	tbaker.de	
1168	tay.dec.com	NXDOMAIN
1169	taugh.com	
1170	tandberg.no	
1171	tamu.edu	mcs-app.tamu.edu:5060
1172	syzygycomm.com	NXDOMAIN
1173	symantec.com	
1174	syce.net	
1175	sybase.com	
1176	syamsoftware.com	
1177	swri.edu	
1178	swip.net	
1179	suse.de	
1180	surfaceeffect.com	
1181	sunroof.eng.sun.com.	
1182	sun.soe.clarkson.edu	NXDOMAIN
1183	sumexaim.stanford.edu	NXDOMAIN
1184	stupi.se	
1185	streetwavesnetworks.com	NXDOMAIN
1186	stonewall.nyser.net	NXDOMAIN
1187	stmi.com	
1188	steltor.com	
1189	ste0906.wins.icl.co.uk	
1190	st04.pst.org	
1191	st.rim.or.jp	
1192	ssu.ac.kr	
1193	sss.pgh.pa.us	
1194	ssf.abk.nec.co.jp	
1195	sse.ie	
1196	ss8networks.com	
1197	spyder.ssw.com	
1198	spybeam.org	
1199	sprintmail.com	sip.earthlink.net:5060
1200	sprintlabs.com	
1201	spiritone.com	
1202	spirent.com	
1203	spider.com	
1204	spg.yrp.nttdocomo.co.jp	
1205	speechworks.com	
1206	speakeasy.net	
1207	sonera.com	
1208	soleocommunications.com	
1209	snom.de	
1210	sniabg.wa.sni.de	NXDOMAIN
1211	snet.fri.unilj.si	NXDOMAIN
1212	sm.sony	NXDOMAIN
1213	skyweyr.com	
1214	skygate.co.uk	
1215	skat.usc.edu	
1216	sita.kiev.ua	
1217	sirkay.com	SERVFAIL
1218	singularis.ltd.uk	
1219	simonstl.com	
1220	silverplatter.com	
1221	siliconcircus.com	
1222	sics.se	
1223	shrubbery.net	
1224	shore.net	
1225	shl.com	
1226	shiratori.riec.tohoku.ac.jp	
1227	shinkuro.com	
1228	shaftek.org	
1229	shacham.net	
1230	setcce.org	
1231	sesastra.com	
1232	sensinode.com	
1233	senanet.com	SERVFAIL
1234	sednawireless.com	
1235	securify.com	
1236	securesoftware.com	
1237	secude.com	
1238	sec.nl	
1239	searn.sunet.se	
1240	schlitt.net	
1241	scfn.thpl.lib.fl.us	NXDOMAIN
1242	sce.carleton.ca	
1243	sbc.com	
1244	sbb.spkberlin.de	
1245	sayshell.umd.edu	NXDOMAIN
1246	savvis.net	
1247	savecore.net	
1248	saturn.nrl.navy.mil	NXDOMAIN
1249	sateh.com	keizer.soze.com:5060
1250	sanlight.net	
1251	salford.ac.uk	
1252	sait.samsung.co.kr	
1253	saintjoe.edu	
1254	sabletech.com	
1255	rz.uniregensburg.de	
1256	rz.unikarlsruhe.de	NXDOMAIN
1257	rutgers.edu	
1258	runit.sintef.no	
1259	rtp.vnet.ibm.com	guzzle-02.watson.ibm.com:5060
1260	rslcom.com	
1261	rsch.wisc.edu	NXDOMAIN
1262	routerware.com	
1263	ropesgray.com	
1264	rocket.com	
1265	rivcom.com	
1266	rincon.com	
1267	rickardgroup.com	
1268	rias.com	
1269	rhapsodynetworks.com	
1270	rfdsoftware.com	
1271	rfceditor.org	
1272	reutershealth.com	
1273	reston.ans.net	
1274	resolutenetworks.com	
1275	research.belllabs.com	NXDOMAIN
1276	rem.com	
1277	relito.medeng.wfu.edu	NXDOMAIN
1278	relay.cv.com	NXDOMAIN
1279	refactorednetworks.com	NXDOMAIN
1280	reapertech.com	
1281	realnames.com	
1282	real.com	
1283	rea0803.wins.icl.co.uk	
1284	rdmg.mgcs.mei.co.jp	
1285	rdl.toshibatec.co.jp	
1286	rden.loc.gov	NXDOMAIN
1287	rd.bbc.co.uk	
1288	rci.rogers.com	
1289	rchland.iinus1.ibm.com	NXDOMAIN
1290	rc.tudelft.nl	
1291	raytheon.com	
1292	rational.com	
1293	ranger.enet.dec.com	NXDOMAIN
1294	ralvmg.vnet.ibm.com	guzzle-02.watson.ibm.com:5060
1295	ralvma.vnet.ibm.com	guzzle-02.watson.ibm.com:5060
1296	rainmakertechnologies.com	
1297	radvision.com	
1298	radusa.com	
1299	raba.com	
1300	ra.lucent.com	
1301	qwest.net	
1302	quarrytech.com	SERVFAIL
1303	qnx.com	
1304	qbik.com	
1305	purplestreak.com	
1306	pulver.com	redirect.sipeduenum.pulver.com:5062
1307	procket.net	
1308	primenet.com	
1309	powerdsine.com	
1310	portwise.com	
1311	poliba.it	
1312	poel.juice.or.jp	NXDOMAIN
1313	pobox.org.sg	
1314	pnl.gov	
1315	planetfred.com	
1316	pirus.com	
1317	pipex.net	
1318	picopoint.com	
1319	piclab.com	
1320	photuris.com	
1321	photonex.com	
1322	photodex.com	
1323	pgp.com	
1324	pg.com	
1325	peta.arch.ecl.net	
1326	pescadero.stanford.edu	NXDOMAIN
1327	perser.org	
1328	peoplepc.com	
1329	peerless.com	
1330	pbs.org	
1331	path.net	
1332	passedge.com	
1333	par1.par.sita.int	NXDOMAIN
1334	panda.com	
1335	padl.com	
1336	pacband.com	
1337	oz.com	
1338	osu.edu	
1339	osi3.ncsl.nist.gov	
1340	osf.org	
1341	orthanc.ab.ca	NXDOMAIN
1342	orion.harvard.edu	NXDOMAIN
1343	orange_ftgroup.com	NXDOMAIN
1344	oran.enet.dec.com	NXDOMAIN
1345	optonline.net	
1346	operax.com	
1347	opentransit.net	
1348	opentext.com	
1349	openssl.org	
1350	openssh.com	
1351	opengeospatial.org	
1352	openettelecom.com	
1353	openbsd.org	
1354	onramp.net	
1355	online.ie	
1356	oni.com	NXDOMAIN
1357	onesecure.com	
1358	on.com	
1359	olymtech.net	
1360	oki.co.jp	
1361	ohnolab.org	
1362	ohiou.edu	
1363	oceana.com	
1364	occamnetworks.com	
1365	oberon.usc.edu	NXDOMAIN
1366	nyu.edu	
1367	nyct.com	
1368	nwlink.com	
1369	nuasis.com	
1370	nttvdt.hil.ntt.co.jp	NXDOMAIN
1371	nttat.com	SERVFAIL
1372	ntrg.com	
1373	nt.com	
1374	nsipo.arc.nasa.gov	NXDOMAIN
1375	nrtech.cit.cornell.edu	NXDOMAIN
1376	nrl.arpa	NXDOMAIN
1377	nrao.edu	
1378	nr.no	
1379	noware.co.uk	
1380	noware.co.jp	
1381	not.invisible.net	
1382	northstream.se	
1383	nortel.co.uk	
1384	noc.usgs.net	
1385	noao.edu	
1386	nnsc.nsf.net	
1387	nlm.nih.gov	
1388	nl.net	
1389	njit.edu	
1390	nisc.jvnc.net	
1391	nis.ans.net	
1392	nikhef.nl	
1393	niif.hu	pbx.ki.niif.hu:5060
1394	nic.fr	
1395	ni.aist.go.jp	
1396	nfcforum.org	
1397	nextworks.it	
1398	nexsi.com	
1399	nexor.co.uk	
1400	newtbt.com	
1401	newsguy.com	
1402	nevisnetworks.com	
1403	networks.bgs.com	
1404	networkengines.com	
1405	networkalchemy.com	SERVFAIL
1406	network1.com	SERVFAIL
1407	network.com	
1408	netword.com	
1409	netstar.com	
1410	netscout.com	
1411	netplane.com	
1412	netntv.co.kr	
1413	netmanage.com	
1414	netlabs.com	SERVFAIL
1415	netlab.gmu.edu	
1416	netit.alcatel.it	
1417	netherlabs.nl	
1418	netcomsystems.com	
1419	netbsd.org	
1420	net4u.ch	
1421	net.tsinghua.edu.cn	
1422	nest.org	
1423	nentec.de	
1424	necphilips.com	
1425	necom830.hpcl.titech.ac.jp	
1426	near.net	
1427	ndsuk.com	
1428	ncsa.uiuc.edu	
1429	ncr.disa.mil	
1430	ncf.ca	
1431	nb.ppd.ti.com	NXDOMAIN
1432	nature.com	
1433	nal.ecl.net	NXDOMAIN
1434	myricom.com	
1435	myrealbox.com	
1436	mycfo.com	
1437	mv.us.adobe.com	voipproxy1.adobe.com:5061
1438	mv.unisys.com	NXDOMAIN
1439	muswell.demon.co.uk	
1440	mumbo.ca	
1441	mulligan.com	
1442	mts.ru	
1443	mtghouse.com	
1444	msm.epri.com	NXDOMAIN
1445	msm.cdx.mot.com	
1446	ms2.inr.ac.ru	
1447	moowee.tv	
1448	montulli.org	
1449	montilio.com	
1450	mobilnet.gte.com	
1451	mml.yrp.nttdocomo.co.jp	
1452	mmaa.or.kr	
1453	mlab.yrp.nttdocomo.co.jp	
1454	mjmontpetit.com	
1455	missi.ncsc.mil	
1456	miranda.org	
1457	mind.be	
1458	mimosa.com	
1459	millpark.com	
1460	miek.nl	
1461	midi.org	
1462	middlebury.edu	
1463	micronas.com	
1464	metasolv.com	
1465	merlin.dev.cdx.mot.com	
1466	meridian.uucp	NXDOMAIN
1467	mercury.oss.arh.cpg.cdc.com	NXDOMAIN
1468	memphis.edu	
1469	meinberg.de	
1470	meer.net	
1471	media.kyotou.ac.jp	NXDOMAIN
1472	mdx.ac.uk	
1473	mcr.umich.edu	NXDOMAIN
1474	mchp.siemens.de	
1475	mchenry.net	
1476	mccarter.com	
1477	mbl.edu	
1478	mathom.cisco.com	NXDOMAIN
1479	mathematik.unimarburg.de	NXDOMAIN
1480	math.psu.edu	sbc1.phone.psu.edu:5060
1481	mat.upc.es	gwsip.upc.es:5060
1482	master.control.att.com	
1483	marushin.gr.jp	
1484	mantiscorp.com	
1485	manros.com	
1486	manifestsolutions.com	
1487	malibunetworks.com	
1488	mail.tim.it	
1489	mail.sprint.com	
1490	mail.psi.net	
1491	mail.ndsc.com.cn	
1492	mail.dec.com	
1493	magnus.acs.ohiostate.edu	NXDOMAIN
1494	maelstrom.timeplex.com	
1495	macfergus.com	
1496	lyciumnetworks.com	
1497	lut.ac.uk	
1498	lsi.upc.es	gwsip.upc.es:5060
1499	lounge.org	
1500	loudcloud.com	
1501	loran.com	
1502	lonesome.com	
1503	locus.net	sip01.locus.net:5060
1504	list.org	
1505	lingling.panda.com	
1506	liberate.com	
1507	lgic.co.kr	NXDOMAIN
1508	lge.com	
1509	lepp.com	
1510	lboard.com	
1511	lanworks.com	
1512	lando.hns.com	NXDOMAIN
1513	lancs.ac.uk	
1514	lac.uic.edu	
1515	labs.sbc.com	
1516	labs.att.com	
1517	kozuka.jp	
1518	korusolutions.com	
1519	kniveton.com	
1520	kirei.se	aodenwa.zettou.net:5061
1521	kent.ac.uk	
1522	kei.com	
1523	kegel.com	
1524	kalvi.enet.dec.com	NXDOMAIN
1525	kalbfleisch.us	
1526	kaist.ac.kr	
1527	jvnc.net	
1528	jungle.bt.co.uk	
1529	jti.com	
1530	jsyoung.net	
1531	jsat.net	
1532	jp.sony.com	
1533	jp.apan.net	
1534	join.com	
1535	jf.intel.com	
1536	jeffree.co.uk	
1537	jabberwocky.com	
1538	ix.netcom.com	sip.earthlink.net:5060
1539	iwl.com	ariel.iwl.com:5060
1540	ivmg.net	
1541	itu.int	
1542	itt.com	
1543	iti.salford.ac.uk	
1544	itg.hitachi.co.jp	
1545	itd.adelaide.edu.au	
1546	it.baesystems.com	
1547	issn.org	
1548	iss.net	
1549	isr.umd.edu	
1550	ispsoft.com	
1551	isocor.com	
1552	isochrone.com	
1553	is.titech.ac.jp	
1554	is.rice.edu	
1555	is.chrysler.com	
1556	irisa.fr	
1557	irg.cs.ohiou.edu	
1558	ira.uka.de	
1559	ir.bbn.com	
1560	ipto.arpa	NXDOMAIN
1561	iptc.org	
1562	ipstation.com	
1563	ipsp.revelstone.com	
1564	ipsec.org	
1565	iprsystems.com	
1566	ipmulticast.com	
1567	ipdialog.com	sip2.ipdialog.com:5060
1568	ipass.com	
1569	iocsea.com	NXDOMAIN
1570	invidi.com	SERVFAIL
1571	inventuresystems.co.uk	
1572	intransa.com	
1573	intonet.com	
1574	intevry.fr	NXDOMAIN
1575	intertrust.com	
1576	intelresearch.net	
1577	intellical.com	
1578	inrialpes.fr	sip-serv.inrialpes.fr:5060
1579	inqtel.org	
1580	inode.at	
1581	inmedius.com	
1582	inmarsat.com	
1583	ingres.com	
1584	informix.com	
1585	informedcontrol.com	
1586	informatik.uniwuerzburg.de	
1587	informatik.uniosnabrueck.de	
1588	informatik.unimannheim.de	
1589	informatik.unigoettingen.de	NXDOMAIN
1590	informasic.com	
1591	infoliance.com	
1592	infoblox.com	
1593	info.isoc.org	
1594	info.fundp.ac.be	
1595	infnet.nl	NXDOMAIN
1596	inet.it	
1597	ineoquest.com	
1598	iname.ru	
1599	iksjena.de	
1600	iitm.ernet.in	
1601	ifi.unizh.ch	
1602	ietf.org	
1603	iet.unipi.it.	
1604	iem.unidue.de	NXDOMAIN
1605	identaware.com	
1606	idata.com	
1607	id3.org	
1608	icsl.ucla.edu	server.sip.ucla.edu:5060
1609	icosahedron.org	
1610	icomera.com.	
1611	hyperchip.com	
1612	hut.fi	
1613	hust.edu.cn	
1614	hulaw.harvard.edu	NXDOMAIN
1615	huey.udel.edu	
1616	hrl.com	
1617	hq.walldata.com	
1618	hpdmd48.boi.hp.com	
1619	hotair.hobl.lucent.com	
1620	home.com	
1621	hogpb.att.com	
1622	hoehrmann.de	
1623	hitachihkis.com	NXDOMAIN
1624	hickoryhillconsulting.com	NXDOMAIN
1625	hhi.fhg.de	sipo.fraunhofer.de:5060
1626	herlein.com	
1627	helios.ee.lbl.gov	NXDOMAIN
1628	heidelbg.ibm.com	guzzle-02.watson.ibm.com:5060
1629	haydn.stanford.edu	sip2.Stanford.EDU:5060
1630	harvard.harvard.edu	
1631	harris.com	
1632	hal.rheinmain.de	NXDOMAIN
1633	hakano.com	
1634	gvnw.com	
1635	gte.net	
1636	gtalumni.org	
1637	gt.ca	
1638	gsyc.escet.urjc.es	murphy.urjc.es:5060
1639	gsenger.com	
1640	graiymage.com	
1641	goldwiretech.com	
1642	goland.org	
1643	gnutls.org	
1644	globalcrossing.com	
1645	glic.com	
1646	gintic.gov.sg	NXDOMAIN
1647	ginger.lcs.mit.edu	NXDOMAIN
1648	gigabeam.com	
1649	gideon.bt.co.uk	
1650	gharai.org	
1651	gettcomm.com	
1652	germany.sun.com	
1653	gentoo.org	
1654	genesyslab.com	
1655	geminisecurity.com	
1656	gdawirs.be	
1657	gbiv.com	
1658	gartner.com	
1659	gandalf.ca	SERVFAIL
1660	gallaudet.edu	
1661	g3nova.com	
1662	g1m.jp	NXDOMAIN
1663	fxis.fujixerox.co.jp	
1664	fuschia.net	
1665	funhouse.com	
1666	fuberlin.de	
1667	ft.solteria.net	
1668	freeradius.org	
1669	freegate.net	
1670	frcl.bull.fr	
1671	frascone.com	
1672	franklin.ro	
1673	fr.thalesgroup.com	
1674	fotlan5.fotlan.army.mil	NXDOMAIN
1675	forum.va.gov	
1676	forsythesolutions.com	
1677	forsythe.stanford.edu	NXDOMAIN
1678	fore.co.uk	
1679	fordhutchinson.com	
1680	ford.com	
1681	fnal.fnal.gov	
1682	firstpr.com.au	
1683	finney.org	
1684	fiber.net	
1685	ffi.no	
1686	fdd.com	
1687	fct.unl.pt	
1688	fastq.com	
1689	farm.org	
1690	faraday.ece.cmu.edu	NXDOMAIN
1691	faline.bellcore.com	NXDOMAIN
1692	expo.lcs.mit.edu	W92-130-DMZ-SIP-PROXY-1.MIT.EDU:5060
1693	explosive.net	
1694	excitecorp.com	
1695	europa.clearpoint.com	NXDOMAIN
1696	eunet.fr	SERVFAIL
1697	etsi.org	
1698	etl.go.jp	
1699	etiam.com	
1700	ethernot.org	
1701	esa.int	
1702	ericsson.com.au	
1703	ericsson.ca	
1704	equipecom.com	
1705	enron.net	
1706	engr.sgi.com	
1707	engage.com	
1708	eng.umd.edu	
1709	eng.paradyne.com	NXDOMAIN
1710	eng.fore.com	SERVFAIL
1711	enet.dec.com	NXDOMAIN
1712	energizeurnet.com	
1713	enel.ucalgary.ca	voicesip.ucalgary.ca:5060
1714	endforce.com	
1715	emulex.com	
1716	email.enmu.edu	NXDOMAIN
1717	elysium.ltd.uk	
1718	eln.ericsson.se	NXDOMAIN
1719	elmalki.homeip.net	NXDOMAIN
1720	eit.com	
1721	effnet.com	
1722	eff.org	
1723	eeel.nist.gov	
1724	eecs.harvard.edu	
1725	eecs.berkeley.edu	
1726	eece.ksu.edu	
1727	ee.tamu.edu	mcs-app.tamu.edu:5060
1728	ee.ryerson.ca	
1729	ee.oulu.fi	
1730	edinburgh.ac.uk	
1731	ecs.ericsson.com	NXDOMAIN
1732	ecf.ncsl.nist.gov	
1733	ececs.uc.edu	
1734	ece.skku.ac.kr	
1735	ebu.ch	proxysip:5060
1736	ebt.com	
1737	ebay.com	
1738	earth.path.net	
1739	earncc.earn.net	NXDOMAIN
1740	ealaddin.com	
1741	dvnet.com	
1742	dvb.org	
1743	dumbterm.net	
1744	dumbo.pobox.com	
1745	dthaler.microsoft.com	NXDOMAIN
1746	dstc.edu.au	NXDOMAIN
1747	dsl.cis.upenn.edu	vs1.voice.isc.upenn.edu:5060
1748	dscreat.com	
1749	drl.mei.co.jp	
1750	dra.com	
1751	dptinfo.ustrasbg.fr	NXDOMAIN
1752	dpc.com	
1753	doublewidesoft.com	
1754	doubleshotsecurity.com	
1755	dotrocket.com	
1756	dothill.com	
1757	doim6.monmouth.army.mil	NXDOMAIN
1758	doesnotexist.org	
1759	dnsmoda.org	NXDOMAIN
1760	ditechcom.com	
1761	dip.co.uk	
1762	dino.media.co.kr	NXDOMAIN
1763	diku.dk	
1764	digium.com	
1765	differential.com	SERVFAIL
1766	dierks.org	
1767	di.epfl.ch	NXDOMAIN
1768	devicescape.com	
1769	deterministicnetworks.com	
1770	det.ua.pt	
1771	der.edf.fr	
1772	demon.net	
1773	dehora.net	
1774	decwrl.dec.com	
1775	decwrl.arpa	NXDOMAIN
1776	ddi.co.jp	
1777	dd.iij4u.or.jp	
1778	dct.sony.co.jp	
1779	dcs.gla.ac.uk	
1780	dclunie.com	
1781	dcc.uchile.cl	
1782	db.org	
1783	daver.bungi.com	
1784	datapower.com	
1785	datafusion.net	
1786	datacraft.com.au	
1787	databus.com	
1788	data.com	
1789	dascom.com	
1790	darkwing.uoregon.edu	ses-uo.uoregon.edu:5060
1791	danfoss.com	
1792	daedelus.com	
1793	da.jp.nec.com	
1794	cyrusoft.com	
1795	cyno.com	
1796	cygnus.com	
1797	cybersafe.com	
1798	cyber.com.au	
1799	cwi.nl	
1800	cw.com	lcs-ad-01.ad.plc.cwintra.com:5060
1801	cup.hp.com.	
1802	cu.nih.gov	
1803	ctit.utwente.nl	SERVFAIL
1804	cthulu.miskatonic.edu	NXDOMAIN
1805	csms.edu.mn	
1806	csli.stanford.edu	sip2.Stanford.EDU:5060
1807	csl.stanford.edu	sip2.Stanford.EDU:5060
1808	csl.rdc.toshiba.co.jp	
1809	csiro.au	csiroact-sip.gw.csiro.au:5060
1810	cseic.saic.com	
1811	csee.ltu.se	
1812	cse.unl.edu	
1813	cscs.ch	
1814	cs.utwente.nl	SERVFAIL
1815	cs.unt.edu	
1816	cs.unisb.de	
1817	cs.unibo.it	
1818	cs.unc.edu	proxy-2.rtc.unc.edu:5060
1819	cs.ucdavis.edu	sip-gw1.ucdavis.edu:5060
1820	cs.ubc.ca	
1821	cs.tuberlin.de	NXDOMAIN
1822	cs.ttu.edu	
1823	cs.technion.ac.il	
1824	cs.rutgers.edu	
1825	cs.ricoh.co.jp	
1826	cs.princeton.edu	
1827	cs.ohiou.edu.	
1828	cs.knu.ac.kr	
1829	cs.jhu.edu	
1830	cs.gmu.edu	
1831	cs.duke.edu	SERVFAIL
1832	cs.caltech.edu	
1833	cs.bu.edu	sipxchange.bu.edu:5060
1834	cryptorights.org	
1835	crypto.com	
1836	crosslink.net	
1837	crockford.com	
1838	crhc.uiuc.edu	
1839	crd.lotus.com	
1840	craycom.dk	
1841	cranens.nwscc.sea06.navy.mil	NXDOMAIN
1842	cqos.com	
1843	cpmx.mail.saic.com	
1844	cplane.com	SERVFAIL
1845	cpdmfg.cig.mot.com	
1846	cpcug.org	
1847	cp.net	
1848	cox.net	
1849	counterpane.com	
1850	cosmos.kaist.ac.kr	
1851	corriente.net	
1852	corp.sun.com	
1853	coronanetworks.com	
1854	cornfed.com	
1855	cornell.edu	SERVFAIL
1856	coreon.net	NXDOMAIN
1857	coppercom.com	
1858	coopercain.com	
1859	cooley.com	
1860	conncoll.edu	
1861	compucat.com.au	
1862	commerceone.com	
1863	commandinformation.com	
1864	comm.wang.com	NXDOMAIN
1865	comdev.cc	
1866	colubris.com	
1867	colttelecom.be	SERVFAIL
1868	colt.net	
1869	colorado.edu	
1870	cohesive.com	
1871	cogsci.uiuc.edu	
1872	codeontheroad.com	
1873	cnuce.cnr.it	
1874	cnu.ac.kr	
1875	cnt.com	
1876	cnnic.net.cn	
1877	cmis.csiro.au	csiroact-sip.gw.csiro.au:5060
1878	cme.nist.gov	
1879	clerew.man.ac.uk	
1880	clarinet.ustrasbg.fr	NXDOMAIN
1881	claddagh.ie	
1882	citrix.com	
1883	citr.com.au	
1884	circularnetworks.com	
1885	circa.ca	SERVFAIL
1886	cio.gv.at	
1887	cig.mot.com	
1888	cic.net	
1889	ciber.com	
1890	chello.nl	
1891	chage.com	SERVFAIL
1892	ch.att.com	
1893	cetis.hvu.nl	
1894	ceterusnetworks.com	
1895	cernet.edu.cn	
1896	cern.ch	
1897	central.sun.com	
1898	center.jfn.co.jp	
1899	cdt.luth.se	
1900	cdg.chalmers.se	
1901	cdc.com	
1902	ccv.bbn.com	NXDOMAIN
1903	ccrl.sj.nec.com	NXDOMAIN
1904	ccrl.nj.nec.com	
1905	ccm.cl.nec.co.jp	
1906	cc.uq.oz.au	
1907	catalogix.se	
1908	caremail.nl	
1909	caltech.edu	
1910	callas.org	
1911	calix.com	
1912	caida.org	
1913	cadia.com	SERVFAIL
1914	cad.ntukpi.kiev.ua	NXDOMAIN
1915	cacheflow.com	
1916	bull.com	
1917	bscs.com	SERVFAIL
1918	broadwing.com	
1919	broadband.att.com	
1920	bridgeportnetworks.com	SERVFAIL
1921	brianrosen.net	
1922	breaker.gu.net	NXDOMAIN
1923	boxnarrow.com	
1924	bovik.org	
1925	boutell.com	
1926	boswijck.com	
1927	bolyard.com	
1928	bobmonsour.com	
1929	blueyonder.co.uk	
1930	bluecoat.com	
1931	blackrose.org	
1932	bk.jp.nec.com	
1933	bjai.asiainfo.com	NXDOMAIN
1934	bitstream.com	
1935	birdstep.com	
1936	bina.de	
1937	bigfut.lkg.dec.com	NXDOMAIN
1938	bigfut.enet.dec.com	NXDOMAIN
1939	bezeqint.net	
1940	betrusted.com	
1941	berlioz.nsc.com	
1942	berkeley.edu	
1943	belgacom.be	
1944	beijing.asiainfo.com	NXDOMAIN
1945	bcqre.com	
1946	bbnplanet.com	
1947	banknet.net	
1948	baltimore.com	
1949	axerra.com	
1950	axalto.com	
1951	awduche.com	
1952	awardsolutions.com	
1953	av8.net	
1954	austin.rr.com	
1955	austin.ibm.com	guzzle-02.watson.ibm.com:5060
1956	attcanada.ca	
1957	atosc.org	
1958	ati.com	
1959	athonet.com	
1960	atc.boeing.com	
1961	astral.msk.su	
1962	arin.net	
1963	arianetworks.com	
1964	arbortext.com	
1965	araneus.fi	
1966	aptx.com	
1967	appgate.com	
1968	apertus.com	
1969	aol.net	
1970	anubis.network.com	NXDOMAIN
1971	antiphishing.org	
1972	annies.nl	
1973	andiamo.com	
1974	andersen.fr	
1975	anders.com	
1976	anassoc.com	
1977	alvishagglunds.se	
1978	alumni.rpi.edu	
1979	alumni.caltech.edu	
1980	alum.sinica.edu	
1981	allot.com	
1982	algroup.co.uk	
1983	alexua.com	
1984	alcatelsbell.com.cn	
1985	alcatel.com.au	
1986	alcatel.co.uk	
1987	alcatel	NXDOMAIN
1988	akc.com	
1989	akara.com	
1990	akamai.com	
1991	airvana.com	
1992	airtightnetworks.net	
1993	airtel.es	
1994	aimnet.net	
1995	ah.jp.nec.com	
1996	agcs.com	
1997	affinia.net	SERVFAIL
1998	aeo.mts.dec.com	NXDOMAIN
1999	advaoptical.com	
2000	advantechamt.com	
2001	adiscon.com	
2002	adelphia.net	
2003	addtrust.com	
2004	adc.com	
2005	ad.cyberhome.ne.jp	
2006	actividentity.com	
2007	acreo.se	
2008	acm.com	
2009	acl.lanl.gov	
2010	acf10.nyu.edu	NXDOMAIN
2011	aces.com	
2012	academ.com	
2013	ac.upc.edu	putt.upc.es:5060
2014	abisource.com	
2015	abcsoftware.lv	
2016	aaronsw.com	
2017	aaa.lucent.com	
2018	a.isi.edu	NXDOMAIN
2019	724.com	
2020	6wind.com	
2021	4kassociates.com	NXDOMAIN
2022	428cobrajet.net	
2023	3mail.3com.com	
2024	2wire.com	
2025	00.org