Robtex

Up: 204.11.160.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 204.11.168.0/22
Down right: 204.11.172.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
204.11.168.0	PTR	204.11.168.0.j2global.com
204.11.168.2	A+PTR	go.efax.com
204.11.168.2	A	email2fax.at
204.11.168.2	A	efaxtv.com
204.11.168.3	PTR	go.j2.com
204.11.168.9	PTR	webdial.consensus.com
204.11.168.11	A+PTR	webdial.j2corporate.com
204.11.168.11	A	corporate.efax.com
204.11.168.12	PTR	faq.efax.com
204.11.168.12	PTR	partners.efax.com
204.11.168.12	A	enterprise.efax.com
204.11.168.13	PTR	efaxcorporate.com
204.11.168.13	PTR	origin-www.efaxcorporate.com
204.11.168.19	A	dav.j2.com
204.11.168.20	A	fax.com.es
204.11.168.20	A	efaxradio.com
204.11.168.20	A	efax.com
204.11.168.24	A+PTR	ads.efax.com
204.11.168.25	A+PTR	jconnect.j2.com
204.11.168.26	A+PTR	j2corporate.com
204.11.168.26	A	corporate.efax.com
204.11.168.27	PTR	www2.efax.com
204.11.168.32	A+PTR	087efax.co.za
204.11.168.32	A+PTR	efax.co.za
204.11.168.32	PTR	efax086.co.za
204.11.168.34	A	efaxsecure.com
204.11.168.40	A	chat.j2.com
204.11.168.41	A+PTR	chat1.j2.com
204.11.168.42	A+PTR	chat2.j2.com
204.11.168.42	A	keepitsafe.ca
204.11.168.43	PTR	ereceptionist.fr
204.11.168.50	A	ads.evoice.com
204.11.168.51	A	myaccount.metrofax.com
204.11.168.52	A	universe.j2.com
204.11.168.53	A	www.metrofax.com
204.11.168.57	A	efax.co.uk
204.11.168.57	A	efax.com.cn
204.11.168.57	A	efax.com.pl
204.11.168.58	PTR	ntp1.j2global.com
204.11.168.64	A+PTR	ns1.j2global.com
204.11.168.64	A	ns1.callsciences.com
204.11.168.64	A	ns2.jfax.com
204.11.168.68	A+PTR	ns3.j2global.com
204.11.168.71	PTR	en.efax.com
204.11.168.72	A	callrec.j2.com
204.11.168.73	PTR	j2store.j2global.com
204.11.168.73	A	mbox.mobi
204.11.168.73	A	mbox.com.au
204.11.168.76	PTR	emsrelay1.j2.com
204.11.168.81	A	jsmtp.j2.com
204.11.168.82	A+PTR	secure.j2send.com
204.11.168.82	A+PTR	myaccount.jconnect.com
204.11.168.83	PTR	efaxsendsecure.com
204.11.168.83	A	efaxtls.com
204.11.168.90	A	anp.j2global.com
204.11.168.92	A+PTR	omroute2.j2.com
204.11.168.92	A	efax.pl
204.11.168.93	PTR	omroute1.j2.com
204.11.168.93	A	efax.pt
204.11.168.96	A	relay1.j2.com
204.11.168.97	A+PTR	relay2.j2.com
204.11.168.98	A	relay3.j2.com
204.11.168.99	A+PTR	relay4.j2.com
204.11.168.104	A	relay9.j2.com
204.11.168.105	A+PTR	relay10.j2.com
204.11.168.106	A	tlsrelay1.j2.com
204.11.168.107	A+PTR	tlsrelay2.j2.com
204.11.168.112	A+PTR	smtp10.j2.com
204.11.168.113	A+PTR	smtp11.j2.com
204.11.168.114	A+PTR	smtp12.j2.com
204.11.168.115	A+PTR	smtp13.j2.com
204.11.168.120	A	keepitsafej2.co.uk
204.11.168.123	A	ops-web1.j2.com
204.11.168.131	A	ext-exp-25.landslide.com
204.11.168.131	A	srv-66-151-106-25.landslide.com
204.11.168.131	A	it-admin.landslide.com
204.11.168.137	A	efax.eu
204.11.168.142	A	landslidecorp.com
204.11.168.142	A	landslidevictory.com
204.11.168.142	A	landlside.com
204.11.168.149	PTR	outgoing3.onebox.com
204.11.168.149	A	www.keepitsafe.com
204.11.168.149	A	offsitebackupsolutions.com
204.11.168.152	A	outgoing2.onebox.com
204.11.168.155	A+PTR	outgoing.onebox.com
204.11.168.157	A	webapi.onebox.com
204.11.168.159	A	acctmgr.onebox.com
204.11.168.161	A	jblast.com
204.11.168.163	A	faxorama.com
204.11.168.163	A	hibertel.com
204.11.168.163	A	faxreseller.com
204.11.168.165	A	efax.co.uk
204.11.168.171	PTR	171.j2global.com
204.11.168.171	A	en2.efax.com
204.11.168.182	A	ort.ucmmail.com
204.11.168.187	A+PTR	vljcws05.ucmretail.internal.callsciences.com
204.11.168.187	A	www.efax.ca
204.11.168.187	A	efax.ca
204.11.168.191	A	efax.com.hk
204.11.168.193	A	efax.com.my
204.11.168.197	A	networktelsys.com
204.11.168.197	A	thriftyconferencing.com
204.11.168.197	A	filebanc.com
204.11.168.200	A	sip.onebox.com
204.11.168.201	A+PTR	engineering.onebox.com
204.11.168.203	A	engineering.onebox.com
204.11.168.215	A	tollfreemax.com
204.11.168.215	A	www.tollfreemax.com
204.11.168.217	A+PTR	value800.com
204.11.168.217	A	www.value800.com
204.11.168.218	A	neutouch.com
204.11.168.219	PTR	1800pro.com
204.11.168.220	A	wap.onebox.com
204.11.168.226	PTR	hotvoice.com
204.11.168.229	A	www.ucmmail.com
204.11.168.229	A	ucmmail.com
204.11.168.231	A	emrelay2.onebox.com
204.11.168.233	A+PTR	emrelay.onebox.com
204.11.168.233	A	vodarelay.onebox.com
204.11.168.233	A	smtp.hotvoice.com
204.11.168.242	A	wap.abcnvirtual.com
204.11.168.244	A	sync.onebox.com
204.11.168.247	A	login.mybusinessassistant.net
204.11.168.249	A+PTR	app.campaignercrm.com
204.11.169.11	A+PTR	ns5.j2global.com
204.11.169.12	PTR	phoenix.j2global.com
204.11.169.13	A	www.dr.efaxcorporate.com
204.11.169.15	A	www.dr.evoice.com
204.11.169.20	A+PTR	www.dr.efax.com
204.11.169.21	A	winserv.sfaxme.com
204.11.169.21	A	app.sfaxme.com
204.11.169.25	A+PTR	www.dr.j2.com
204.11.169.26	PTR	www.dr.efaxcorporate.com
204.11.169.28	A+PTR	www.dr.j2global.com
204.11.169.46	A+PTR	wwwi.dr.efax.com
204.11.169.87	A+PTR	bounced2.efax.com
204.11.169.88	A	wsf.metrofax.com
204.11.169.112	PTR	smtp.dr.j2.com
204.11.169.134	PTR	smtp7.dataoncall.com
204.11.169.135	PTR	smtp8.dataoncall.com
204.11.169.136	PTR	efaxdr.dataoncall.com
204.11.169.151	A+PTR	tlsrelay3.j2.com
204.11.169.193	A+PTR	zixc1s1.strongport.com
204.11.169.193	A	zixvpm.strongport.com
204.11.169.194	PTR	zixc2s1.strongport.com
204.11.169.194	A	zixvpm.askforhomecare.com
204.11.169.194	A	zixc2.strongport.com
204.11.169.197	PTR	zixc5s1.strongport.com
204.11.169.197	A	zixc5.strongport.com
204.11.169.202	PTR	zixc8s1.strongport.com
204.11.169.202	A	zixc8.strongport.com
204.11.169.202	A	zixvpm.sincera.net
204.11.169.208	PTR	zixc2s2.strongport.com
204.11.169.208	A	zixvpm.askforhomecare.com
204.11.169.211	A	zixc5.strongport.com
204.11.169.214	A+PTR	zixc8s2.strongport.com
204.11.169.214	A	zixvpm.lakeshoresurgicalpractice.com
204.11.169.221	PTR	smtp.p1.j2.com
204.11.169.222	PTR	smtp.p1.j2.com
204.11.169.223	PTR	mailout3.chd.j2.com
204.11.169.223	PTR	smtp.chd.j2.com
204.11.169.224	PTR	smtp.p1.j2.com
204.11.169.225	PTR	mailout5.chd.j2.com
204.11.169.226	PTR	smtp.p1.j2.com
204.11.169.227	PTR	smtp.p1.j2.com
204.11.169.229	A	sendrelay5.j2.com
204.11.169.230	A	sendrelay6.j2.com
204.11.169.231	A	sendrelay7.j2.com
204.11.169.232	A	sendrelay8.j2.com
204.11.169.233	PTR	smtp.p1.j2.com
204.11.169.233	A	efaxsendsecure.com
204.11.169.234	A	efaxds.com
204.11.169.241	A+PTR	chd.efax.com
204.11.169.250	PTR	chd.efax.com
204.11.170.3	PTR	did.jfax.com
204.11.170.14	A+PTR	sslvpn.j2global.com
204.11.170.15	A	api.j2.com
204.11.170.15	A	owa.j2global.com
204.11.170.17	A	smtp1.j2.com
204.11.170.18	PTR	mg01.j2global.com.170.11.204.in-addr.arpa
204.11.170.64	PTR	info.efax.com
204.11.170.65	PTR	info.j2.com
204.11.170.67	A	emstest.j2global.com
204.11.170.75	A+PTR	mtest.onebox.com
204.11.170.77	A	emstest.j2.com
204.11.170.92	PTR	efax.j2.com
204.11.170.93	A	mail.callsciences.com
204.11.170.141	PTR	info.efaxcorporate.com
204.11.170.146	PTR	mx2.efax.com
204.11.170.147	PTR	mx2.documagix.com
204.11.170.213	A	webmail.j2.com
204.11.171.50	A	101fax.com
204.11.171.52	A	dataoncall.com
204.11.171.52	A	www.dataoncall.com
204.11.171.57	A	fax.com
204.11.171.57	A	www.fax.com
204.11.171.58	A	faxmicro.com
204.11.171.58	A	www.faxmicro.com
204.11.171.67	A	secureservices.dataoncall.com
204.11.171.68	A	secure.smartfax.com
204.11.171.69	A	send2fax.com
204.11.171.69	A	www.send2fax.com
204.11.171.72	A	upload.venali.net
204.11.171.73	A	webservices.venali.net
204.11.171.93	A	mail3.dataoncall.com
204.11.171.94	A	mail4.dataoncall.com
204.11.171.95	A	mail.dataoncall.com
204.11.171.96	A	smtp1.dataoncall.com
204.11.171.99	A	smtp4.dataoncall.com
204.11.172.10	PTR	ns2.j2global.com
204.11.172.10	A	ns3.callsciences.com
204.11.172.10	A	ns.jfax.com
204.11.172.11	A+PTR	mailq.j2.com
204.11.172.11	A	mailq.jfax.com
204.11.172.12	PTR	ns4.j2global.com
204.11.172.45	A+PTR	frb.j2.com
204.11.172.50	A	www.fax4free.com
204.11.172.50	A	www7.fax4free.com
204.11.172.52	A+PTR	jblast.j2.com
204.11.172.52	A	jblast.com.es
204.11.172.69	A	latf1.efax.com
204.11.172.70	A+PTR	latf11.efax.com
204.11.172.79	PTR	efaxds.com
204.11.172.154	PTR	smtp1.ix2.j2.com
204.11.172.157	A+PTR	smtp4.ix2.j2.com
204.11.172.180	A+PTR	sendrelay17.j2.com
204.11.172.180	A	smtp.venali.net
204.11.172.181	A+PTR	sendrelay18.j2.com
204.11.172.181	A	smtp.venali.net
204.11.172.182	A+PTR	sendrelay19.j2.com
204.11.172.182	A	smtp.venali.net
204.11.172.183	PTR	sendrelay20.j2.com
204.11.172.183	A	smtp.venali.net
204.11.172.253	A+PTR	latf1.efax.com
204.11.173.79	A	efaxds.com
204.11.173.80	A	efaxsendsecure.com
204.11.173.87	A	wsf.metrofax.com
204.11.173.180	A	sendrelay1.j2.com
204.11.173.182	A	smtp.venali.net
204.11.173.182	A	sendrelay13.j2.com
204.11.173.183	A	smtp.venali.net
204.11.173.183	A	sendrelay14.j2.com
204.11.173.184	A	smtp.venali.net
204.11.173.184	A	sendrelay15.j2.com
204.11.173.185	A	smtp.venali.net
204.11.173.185	A	sendrelay16.j2.com
204.11.173.246	A	pit1.efax.com
204.11.173.247	A	pit11.efax.com
204.11.173.250	A+PTR	pdx.efax.com
204.11.174.79	A	efaxds.com
204.11.174.80	A	efaxsendsecure.com
204.11.174.81	A+PTR	sendrelay21.j2.com
204.11.174.82	A+PTR	sendrelay22.j2.com
204.11.174.83	A+PTR	sendrelay23.j2.com
204.11.174.87	A	wsf.metrofax.com
204.11.174.131	A+PTR	zixc2s3.strongport.com
204.11.174.131	A	zixvpm.askforhomecare.com
204.11.174.134	A+PTR	zixc5s3.strongport.com
204.11.174.134	A	zixc5.strongport.com
204.11.174.137	PTR	zixc8s3.strongport.com
204.11.174.137	A	zixvpm.lakeshoresurgicalpractice.com
204.11.174.140	A	zixc1s4.strongport.com
204.11.174.141	PTR	zixc2s4.strongport.com
204.11.174.141	A	zixvpm.askforhomecare.com
204.11.174.144	A+PTR	zixc5s4.strongport.com
204.11.174.144	A	zixc5.strongport.com
204.11.174.147	PTR	zixc8s4.strongport.com
204.11.174.147	A	zixvpm.lakeshoresurgicalpractice.com
204.11.174.250	A+PTR	atl.efax.com
204.11.175.11	A	ccnbackups.com
204.11.175.12	A	backup-lebshama.safebackup.com
204.11.175.91	A	avimark-obs2.keepitsafe.com
204.11.175.194	A+PTR	avimark.keepitsafe.com
204.11.175.220	A	keepitsafe.com