Robtex

Up: 72.45.32.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 72.45.48.0/21
Down right: 72.45.56.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.45.48.0	PTR	static-72-45-48-0.mdde.cpe.atlanticbb.net
72.45.48.27	A	mail.townsend.delaware.gov
72.45.49.8	A	mail.smbitsolutions.biz
72.45.49.9	A	mail.zeppplumbing.com
72.45.49.10	A	mail.vsuites.net
72.45.49.10	A	mail.thespringergroupllc.com
72.45.49.18	PTR	72-45-49-018-static.gsv.md.atlanticbb.net
72.45.49.19	A+PTR	mailin.earthdatainc.com
72.45.49.24	A	mail.hillmgr.com
72.45.49.24	A	hillmgr.com
72.45.49.24	A	eatincorp.com
72.45.49.35	PTR	72-45-49-035-static.gsv.md.atlanticbb.net
72.45.49.48	PTR	72-45-49-048-static.gsv.md.atlanticbb.net
72.45.49.71	A	mail.ncsincorporated.us
72.45.49.77	A	mail.rtiavicon.com
72.45.49.77	A	mail.magicmotionstudios.com
72.45.49.78	A	anametlabs.com
72.45.49.80	PTR	72-45-49-080-static.gsv.md.atlanticbb.net
72.45.49.83	PTR	72-45-49-083-static.gsv.md.atlanticbb.net
72.45.49.99	A+PTR	mail.tandtlaw.net
72.45.49.99	A	remote.trlawoffice.com
72.45.49.103	A	mail.lamotte.com
72.45.49.113	PTR	72-45-49-113-static.gsv.md.atlanticbb.net
72.45.49.141	A	mail.crashtec.net
72.45.49.141	A	crashtec.net
72.45.49.145	PTR	72-45-49-145-static.gsv.md.atlanticbb.net
72.45.49.155	A	mail.famminc.com
72.45.49.160	PTR	72-45-49-160-static.gsv.md.atlanticbb.net
72.45.49.160	A	marcostogo.com
72.45.49.160	A	lanstapasandwine.com
72.45.49.161	PTR	72-45-49-161-static.gsv.md.atlanticbb.net
72.45.49.162	PTR	72-45-49-162-static.gsv.md.atlanticbb.net
72.45.49.163	PTR	barracuda.trissellconsulting.com
72.45.49.177	PTR	72-45-49-177-static.gsv.md.atlanticbb.net
72.45.49.178	PTR	72-45-49-178-static.gsv.md.atlanticbb.net
72.45.49.202	A	remote.estentsandevents.com
72.45.49.202	A	remote.estents.com
72.45.49.207	A	isystematics.com
72.45.49.208	PTR	72-45-49-208-static.gsv.md.atlanticbb.net
72.45.49.210	PTR	72-45-49-210-static.gsv.md.atlanticbb.net
72.45.49.220	A	mail.lundbergbuilders.com
72.45.49.224	PTR	72-45-49-224-static.gsv.md.atlanticbb.net
72.45.49.225	PTR	72-45-49-225-static.gsv.md.atlanticbb.net
72.45.49.227	PTR	72-45-49-227-static.gsv.md.atlanticbb.net
72.45.49.236	A	mail.kirbyrealtymd.com
72.45.49.242	PTR	72-45-49-242-static.gsv.md.atlanticbb.net
72.45.50.35	PTR	72-45-50-035-static.gsv.md.atlanticbb.net
72.45.50.64	PTR	72-45-50-064-static.gsv.md.atlanticbb.net
72.45.50.67	A+PTR	remote.usafill.com
72.45.50.70	A	email.usafill.com
72.45.50.74	A	email2.usafill.com
72.45.50.80	PTR	72-45-50-080-static.gsv.md.atlanticbb.net
72.45.50.90	A	secure.usafill.com
72.45.50.96	PTR	72-45-50-096-static.gsv.md.atlanticbb.net
72.45.50.98	PTR	72-45-50-098-static.gsv.md.atlanticbb.net
72.45.50.99	PTR	72-45-50-099-static.gsv.md.atlanticbb.net
72.45.50.115	PTR	72-45-50-115-static.gsv.md.atlanticbb.net
72.45.50.160	PTR	72-45-50-160-static.gsv.md.atlanticbb.net
72.45.50.178	PTR	72-45-50-178-static.gsv.md.atlanticbb.net
72.45.50.194	PTR	72-45-50-194-static.gsv.md.atlanticbb.net
72.45.50.217	A	dvwlan.dixonvalve.com
72.45.50.235	A	occ-2-397-1001.1.nflxso.net
72.45.50.235	A	occ-1-397-2430.1.nflxso.net
72.45.50.235	A	occ-1-397-1009.1.nflxso.net
72.45.50.240	PTR	72-45-50-240-static.gsv.md.atlanticbb.net
72.45.50.241	PTR	72-45-50-241-static.gsv.md.atlanticbb.net
72.45.51.10	A	mx2.portraitday.com
72.45.51.18	PTR	72-45-51-018-dhcp.gsv.md.atlanticbb.net
72.45.51.32	PTR	72-45-51-032-dhcp.gsv.md.atlanticbb.net
72.45.51.33	PTR	72-45-51-033-dhcp.gsv.md.atlanticbb.net
72.45.51.34	PTR	72-45-51-034-dhcp.gsv.md.atlanticbb.net
72.45.51.64	PTR	72-45-51-064-dhcp.gsv.md.atlanticbb.net
72.45.51.65	PTR	72-45-51-065-dhcp.gsv.md.atlanticbb.net
72.45.51.67	PTR	72-45-51-067-dhcp.gsv.md.atlanticbb.net
72.45.51.82	PTR	72-45-51-082-dhcp.gsv.md.atlanticbb.net
72.45.51.83	PTR	72-45-51-083-dhcp.gsv.md.atlanticbb.net
72.45.51.96	PTR	72-45-51-096-dhcp.gsv.md.atlanticbb.net
72.45.51.97	PTR	72-45-51-097-dhcp.gsv.md.atlanticbb.net
72.45.51.98	PTR	72-45-51-098-dhcp.gsv.md.atlanticbb.net
72.45.51.99	PTR	72-45-51-099-dhcp.gsv.md.atlanticbb.net
72.45.51.112	PTR	72-45-51-112-dhcp.gsv.md.atlanticbb.net
72.45.51.114	PTR	72-45-51-114-dhcp.gsv.md.atlanticbb.net
72.45.51.115	PTR	72-45-51-115-dhcp.gsv.md.atlanticbb.net
72.45.51.129	PTR	72-45-51-129-dhcp.gsv.md.atlanticbb.net
72.45.51.131	PTR	72-45-51-131-dhcp.gsv.md.atlanticbb.net
72.45.51.145	PTR	72-45-51-145-dhcp.gsv.md.atlanticbb.net
72.45.51.160	PTR	72-45-51-160-dhcp.gsv.md.atlanticbb.net
72.45.51.163	PTR	72-45-51-163-dhcp.gsv.md.atlanticbb.net
72.45.51.179	PTR	72-45-51-179-dhcp.gsv.md.atlanticbb.net
72.45.51.227	PTR	72-45-51-227-dhcp.gsv.md.atlanticbb.net
72.45.51.240	PTR	72-45-51-240-dhcp.gsv.md.atlanticbb.net
72.45.51.241	PTR	72-45-51-241-dhcp.gsv.md.atlanticbb.net
72.45.52.159	PTR	72-45-52-159-dhcp.gsv.md.atlanticbb.net
72.45.53.35	PTR	72-45-53-035-dhcp.gsv.md.atlanticbb.net
72.45.53.224	PTR	72-45-53-224-dhcp.gsv.md.atlanticbb.net
72.45.55.3	A+PTR	d-72-45-55-3.mdde.cpe.atlanticbb.net
72.45.55.243	PTR	72-45-55-243-dhcp.gsv.md.atlanticbb.net
72.45.56.109	A	driscall.com
72.45.56.144	PTR	72-45-56-144-dhcp.gsv.md.atlanticbb.net
72.45.57.208	PTR	72-45-57-208-dhcp.gsv.md.atlanticbb.net
72.45.58.237	A	d-72-45-58-237.mdde.cpe.atlanticbb.net
72.45.59.238	A	cbpsmc.net
72.45.59.238	A	mistopp.net
72.45.60.16	PTR	72-45-60-016-dhcp.gsv.md.atlanticbb.net
72.45.60.241	PTR	72-45-60-241-dhcp.gsv.md.atlanticbb.net
72.45.61.47	A	wtfgiveabuck.com
72.45.61.47	A	ugotissues.com
72.45.61.128	PTR	72-45-61-128-dhcp.gsv.md.atlanticbb.net