Robtex

Up: 72.198.128.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 72.198.136.0/22
Down right: 72.198.140.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.198.136.158	A	webmail.sbi-omaha.com
72.198.136.158	A	mail.sbi-omaha.com
72.198.137.5	A	connect01.bloomingoffice.net
72.198.137.12	A+PTR	wsip-72-198-137-12.sv.om.cox.net
72.198.137.12	A	bi-law.com
72.198.137.82	A	mail.frontiersb.com
72.198.137.147	A+PTR	wsip-72-198-137-147.sv.om.cox.net
72.198.137.165	A+PTR	wsip-72-198-137-165.sv.om.cox.net
72.198.137.165	A	ignusfast.com
72.198.137.168	A+PTR	wsip-72-198-137-168.sv.om.cox.net
72.198.137.168	A	journeyoflight.net
72.198.137.229	PTR	mail.eco.com
72.198.137.230	A+PTR	mail.ecoo.com
72.198.137.230	A	emailsecurity.ecoo.com
72.198.137.232	A+PTR	wsip-72-198-137-232.sv.om.cox.net
72.198.137.232	A	portal.ecoo.com
72.198.137.240	A+PTR	jamesharrissalon.com
72.198.138.34	A+PTR	mail.bebt-tech.com
72.198.138.34	A	bebt-tech.com
72.198.138.36	A+PTR	mx1.bebt-tech.com
72.198.138.36	A	mx1.omahajp.com
72.198.138.37	PTR	ns1.bebt-tech.com
72.198.138.38	PTR	wsip-72-198-138-38.sv.om.cox.net
72.198.138.38	A	mx2.omahajp.com
72.198.138.41	PTR	ns2.bebt-tech.com
72.198.138.41	A	ns2.omahajp.com
72.198.138.41	A	ns2.sec-vid.com
72.198.138.42	PTR	wsip-72-198-138-42.sv.om.cox.net
72.198.138.43	PTR	wsip-72-198-138-43.sv.om.cox.net
72.198.138.48	A+PTR	mx2.bebt-tech.com
72.198.138.48	A	mx2.omahajp.com
72.198.138.52	A+PTR	wsip-72-198-138-52.sv.om.cox.net
72.198.138.52	A	ns3.bebt-tech.com
72.198.138.202	A	remote.carlsonburnett.com
72.198.138.214	A+PTR	wsip-72-198-138-214.sv.om.cox.net
72.198.138.214	A	kolcomnet.com
72.198.139.18	A+PTR	mail4.bizco.com
72.198.139.18	A	mail3.bizco.com
72.198.139.128	A	agencies.uwmidlands.org
72.198.139.128	A	epledge.uwmidlands.org
72.198.139.135	PTR	wsip-72-198-139-135.sv.om.cox.net
72.198.139.135	A	cuda.uwmidlands.org
72.198.139.137	A	webmail.uwmidlands.org
72.198.139.179	A	mwns01p.medwellrx.com
72.198.139.180	A	mwns02p.medwellrx.com
72.198.139.185	PTR	wsip-72-198-139-185.sv.om.cox.net
72.198.139.185	A	mailsrv.redlersltc.com
72.198.139.212	A+PTR	wsip-72-198-139-212.sv.om.cox.net
72.198.139.212	A	www.mutationdiscovery.com
72.198.139.212	A	mutationdiscovery.com
72.198.140.26	A	siltekinc.com
72.198.140.27	PTR	wsip-72-198-140-27.dc.dc.cox.net
72.198.140.27	A	eribarpartners.com
72.198.140.27	A	mhiportal.com
72.198.140.34	A	mail.ziadurrani.com
72.198.140.34	A	mail.infotechmgmt.com
72.198.140.98	PTR	wsip-72-198-140-98.dc.dc.cox.net
72.198.140.107	A	mail.mosshomeservices.com
72.198.140.107	A	mail.marbledoctorva.com
72.198.140.107	A	mail.mossbuildinganddesign.com
72.198.140.164	A	mail.adtekengineers.com
72.198.140.186	A+PTR	backupmx.toward.com
72.198.141.3	A	zimbra1.ices-us.net
72.198.141.21	PTR	wsip-72-198-141-21.dc.dc.cox.net
72.198.141.21	A	cyberresearchgroup.net
72.198.141.101	A	mx.vesi1.com
72.198.141.101	A	mx.e-9corporation.com
72.198.141.104	PTR	wsip-72-198-141-104.dc.dc.cox.net
72.198.141.161	A	spam.rarnold.com
72.198.141.162	PTR	wsip-72-198-141-162.dc.dc.cox.net
72.198.141.163	PTR	wsip-72-198-141-163.dc.dc.cox.net
72.198.141.163	A	mail.rarnold.com
72.198.141.164	A	rarnold.com
72.198.141.190	PTR	wsip-72-198-141-190.dc.dc.cox.net
72.198.141.209	PTR	wsip-72-198-141-209.dc.dc.cox.net
72.198.141.209	A	jacketwave.com
72.198.141.230	PTR	wsip-72-198-141-230.dc.dc.cox.net
72.198.141.245	A	girlkieu.info
72.198.141.245	A	eiic.com
72.198.141.246	PTR	wsip-72-198-141-246.dc.dc.cox.net
72.198.141.246	A	mail.girlkieu.us
72.198.141.246	A	www.eiic.com
72.198.141.247	PTR	wsip-72-198-141-247.dc.dc.cox.net
72.198.142.24	PTR	wsip-72-198-142-24.dc.dc.cox.net
72.198.142.28	PTR	wsip-72-198-142-28.dc.dc.cox.net
72.198.142.166	A	hiaquickquotes.com
72.198.142.232	PTR	wsip-72-198-142-232.dc.dc.cox.net
72.198.142.232	A	mail.csi-va.org
72.198.143.3	PTR	wsip-72-198-143-3.dc.dc.cox.net
72.198.143.6	A	ravenwing.com
72.198.143.8	PTR	wsip-72-198-143-8.dc.dc.cox.net
72.198.143.9	PTR	wsip-72-198-143-9.dc.dc.cox.net
72.198.143.10	PTR	wsip-72-198-143-10.dc.dc.cox.net
72.198.143.17	PTR	wsip-72-198-143-17.dc.dc.cox.net
72.198.143.19	PTR	wsip-72-198-143-19.dc.dc.cox.net
72.198.143.25	PTR	wsip-72-198-143-25.dc.dc.cox.net
72.198.143.26	PTR	wsip-72-198-143-26.dc.dc.cox.net
72.198.143.32	PTR	wsip-72-198-143-32.dc.dc.cox.net
72.198.143.33	PTR	wsip-72-198-143-33.dc.dc.cox.net
72.198.143.38	A	itpro.solutions
72.198.143.38	A	mail.itpro.solutions
72.198.143.38	A	mail.eduquese.com
72.198.143.48	PTR	wsip-72-198-143-48.dc.dc.cox.net
72.198.143.73	PTR	wsip-72-198-143-73.dc.dc.cox.net
72.198.143.83	PTR	wsip-72-198-143-83.dc.dc.cox.net
72.198.143.90	PTR	wsip-72-198-143-90.dc.dc.cox.net
72.198.143.91	PTR	wsip-72-198-143-91.dc.dc.cox.net
72.198.143.96	PTR	wsip-72-198-143-96.dc.dc.cox.net
72.198.143.112	PTR	wsip-72-198-143-112.dc.dc.cox.net
72.198.143.123	PTR	wsip-72-198-143-123.dc.dc.cox.net
72.198.143.129	PTR	wsip-72-198-143-129.dc.dc.cox.net
72.198.143.130	PTR	wsip-72-198-143-130.dc.dc.cox.net
72.198.143.135	A	tcscomputer.com
72.198.143.138	PTR	wsip-72-198-143-138.dc.dc.cox.net
72.198.143.141	A	givinghoperadio.com
72.198.143.142	A	mail.askcongress.com
72.198.143.142	A	askcongress.com
72.198.143.153	PTR	wsip-72-198-143-153.dc.dc.cox.net
72.198.143.160	PTR	wsip-72-198-143-160.dc.dc.cox.net
72.198.143.168	PTR	wsip-72-198-143-168.dc.dc.cox.net
72.198.143.171	PTR	wsip-72-198-143-171.dc.dc.cox.net
72.198.143.179	PTR	wsip-72-198-143-179.dc.dc.cox.net
72.198.143.184	PTR	wsip-72-198-143-184.dc.dc.cox.net
72.198.143.195	PTR	wsip-72-198-143-195.dc.dc.cox.net
72.198.143.210	PTR	wsip-72-198-143-210.dc.dc.cox.net
72.198.143.225	PTR	wsip-72-198-143-225.dc.dc.cox.net
72.198.143.235	PTR	wsip-72-198-143-235.dc.dc.cox.net
72.198.143.240	PTR	wsip-72-198-143-240.dc.dc.cox.net
72.198.143.241	PTR	wsip-72-198-143-241.dc.dc.cox.net