Robtex

Up: 72.55.0.0/16
Can't show all results, try to descend to a more specific CIDR
Down left: 72.55.0.0/18
Down right: 72.55.64.0/18
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.55.0.0	A+PTR	72-55-0-0-static.hfc.comcastbusiness.net
72.55.0.7	A+PTR	72-55-0-7-static.hfc.comcastbusiness.net
72.55.1.3	PTR	www.calchannel.com
72.55.1.4	PTR	gto.calchannel.com
72.55.1.4	PTR	mail.calchannel.com
72.55.8.17	A+PTR	72-55-8-17-static.hfc.comcastbusiness.net
72.55.8.32	A	pe01.santamaria.ca.ccs.comcast.net
72.55.9.3	PTR	ns2.lusd.org
72.55.24.178	A	mail.popkinrosaler.com
72.55.25.226	A	ns1.davie-fl.gov
72.55.25.235	A	dc-65027c3d-mail.davie-fl.gov
72.55.25.235	A	mail.davie-fl.gov
72.55.26.65	A	mail.ci.miramar.fl.us
72.55.26.69	A	72-55-26-69-ip-static.hfc.comcastbusiness.net
72.55.26.70	A	72-55-26-70-ip-static.hfc.comcastbusiness.net
72.55.26.74	A	72-55-26-74-ip-static.hfc.comcastbusiness.net
72.55.28.48	A	mia-nce-dc1.cshado.org
72.55.28.49	A	mia-nce-dc2.cshado.org
72.55.28.52	A	cshado.org
72.55.28.52	A	mia-nce-dom01.cshado.org
72.55.32.4	PTR	72-55-32-4-ip-static.hfc.comcastbusiness.net
72.55.32.13	A	72-55-32-13-ip-static.hfc.comcastbusiness.net
72.55.32.26	A	72-55-32-26-ip-static.hfc.comcastbusiness.net
72.55.32.128	A+PTR	72-55-32-128-ip-static.hfc.comcastbusiness.net
72.55.32.129	PTR	72-55-32-129-ip-static.hfc.comcastbusiness.net
72.55.33.25	PTR	barracudacorp.omegasystemscorp.com
72.55.34.1	PTR	mail.clintoncountypa.com
72.55.34.5	PTR	webmail.omef.com
72.55.35.8	A	72-55-35-8-ip-static.hfc.comcastbusiness.net
72.55.35.146	A	72-55-35-146-ip-static.hfc.comcastbusiness.net
72.55.41.50	A	gateway.mercerins.com
72.55.49.17	PTR	mail.yorklibraries.org
72.55.49.19	PTR	www.yorklibraries.org
72.55.49.68	A	zixvpm.mhyork.org
72.55.60.19	PTR	www.bhprsd.org
72.55.60.19	A	highlandrhs.org
72.55.65.1	PTR	72-55-65-1-static.hfc.comcastbusiness.net
72.55.65.34	A	dns1.techlabcentral.org
72.55.65.35	A	dns2.techlabcentral.org
72.55.65.146	A+PTR	mail.prosperitybank.com
72.55.67.3	PTR	ns.sjcfl.us
72.55.67.4	PTR	ns3.sjcfl.us
72.55.67.13	PTR	spam.co.st-johns.fl.us
72.55.67.164	A	72-55-67-164-static.hfc.comcastbusiness.net
72.55.72.36	PTR	pe01.mendota.il.ccs.comcast.net
72.55.74.144	PTR	ironport.planeted.net
72.55.74.145	PTR	ironport.planeted.net
72.55.74.174	A	joshuahalls.com
72.55.74.174	A	rafermand.com
72.55.76.51	A	mail.sublettebank.com
72.55.81.5	PTR	vpn.greektowncasino.com
72.55.81.9	PTR	red.greektowncasino.com
72.55.82.8	A	turbotrash.banyanol.com
72.55.82.11	PTR	mercury.banyanol.com
72.55.82.11	A+PTR	72-55-82-11-static.hfc.comcastbusiness.net
72.55.82.11	A	www.banyanol.com
72.55.86.163	PTR	mx.dominosfarms.com
72.55.89.100	A	72-55-89-100-ip-static.hfc.comcastbusiness.net
72.55.89.200	A	europespecial.com
72.55.89.230	A	facilitysupportservice.com
72.55.90.22	A	ftp.kadantaes.com
72.55.90.22	A	access.kadantaes.com
72.55.90.22	A	kadantbc.com
72.55.91.16	A	91-55-72-16-ip-static.hfc.comcastbusiness.net
72.55.91.79	A	faitherie.org
72.55.91.79	A	faitherie.com
72.55.91.79	A	faithteen.org
72.55.112.74	A	support.ymcamemphis.org
72.55.112.74	A	mail.ymcamemphis.org
72.55.112.86	A	mail.theblvd.org
72.55.112.158	PTR	disradiology.com
72.55.112.158	A	mail.disradiology.com
72.55.112.158	A	green-orbit.com
72.55.112.230	PTR	72-55-112-230-static.hfc.comcastbusiness.net
72.55.112.238	A	ip1.sxpusa.com
72.55.113.145	A	nscmexchange.newsouthcapital.com
72.55.113.153	A+PTR	ip2.sxpusa.com
72.55.113.153	PTR	mail.sxpusa.com
72.55.113.154	A+PTR	ip3.sxpusa.com
72.55.113.156	A	ip5.sxpusa.com
72.55.114.66	A+PTR	www.ci.collierville.tn.us
72.55.114.66	A	ci.collierville.tn.us
72.55.114.72	A	mail.ci.collierville.tn.us
72.55.114.73	A	mx.ci.collierville.tn.us
72.55.114.210	A	obms.us
72.55.114.211	A	mail.obms.us
72.55.114.212	PTR	datademons.obms.us
72.55.114.212	A+PTR	hestia.obms.us
72.55.114.212	A+PTR	mvr.obms.us
72.55.115.2	PTR	mail.victory.edu
72.55.115.89	A	mail.northstarinstitute.net
72.55.115.178	A+PTR	72-55-115-178-static.hfc.comcastbusiness.net
72.55.115.226	A+PTR	mail.n2newdirection.org
72.55.115.226	A	mail.powercentercdc.org
72.55.116.72	A+PTR	72-55-116-72-static.hfc.comcastbusiness.net
72.55.116.72	A	ns0.landau.com
72.55.116.72	A	ns3.landau.com
72.55.116.73	PTR	72-55-116-73-static.hfc.comcastbusiness.net
72.55.116.73	A	ns4.landau.com
72.55.117.201	A	btucasinomarketing.com
72.55.117.201	A	72-55-117-201-ip-static.hfc.comcastbusiness.net
72.55.117.201	A	www.resortscasinomarketing.com
72.55.117.202	A	btucasinomarketing.com
72.55.117.202	A	www.resortscasinomarketing.com
72.55.117.202	A	resortscasinomarketing.com
72.55.122.4	A+PTR	72-55-122-4-static.hfc.comcastbusiness.net
72.55.122.44	A	mail.shl.org
72.55.122.44	A	mail.shsm.org
72.55.122.93	A	sankofa.loc.edu
72.55.123.10	PTR	securas.com
72.55.123.11	PTR	securas.com