Robtex

Up: 72.45.0.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 72.45.8.0/22
Down right: 72.45.12.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.45.8.48	PTR	72-45-8-048-dhcp.gsv.md.atlanticbb.net
72.45.9.73	PTR	d-72-45-9-73.mdde.cpe.atlanticbb.net
72.45.9.73	A	72-45-9-073-dhcp.gsv.md.atlanticbb.net
72.45.9.202	PTR	72-45-9-202-dhcp.gsv.md.atlanticbb.net
72.45.10.97	A+PTR	72-45-10-097-dhcp.gsv.md.atlanticbb.net
72.45.10.107	A	mail.interaptech.com
72.45.10.179	PTR	d-72-45-10-179.mdde.cpe.atlanticbb.net
72.45.10.179	A	brileyenterprises.com
72.45.10.179	A	johnnybebad33.com
72.45.10.207	A+PTR	72-45-10-207-dhcp.gsv.md.atlanticbb.net
72.45.11.60	A+PTR	72-45-11-060-dhcp.gsv.md.atlanticbb.net
72.45.11.60	A	mail.bobbyhunt.net
72.45.11.60	A	bobbyhunt.net
72.45.11.136	A+PTR	72-45-11-136-dhcp.gsv.md.atlanticbb.net
72.45.12.12	A	asipbx.com
72.45.12.183	A+PTR	72-45-12-183-dhcp.gsv.md.atlanticbb.net
72.45.13.1	PTR	72-45-13-001-dhcp.gsv.md.atlanticbb.net
72.45.13.2	A	72-45-13-002-dhcp.gsv.md.atlanticbb.net
72.45.13.15	A	72-45-13-015-dhcp.gsv.md.atlanticbb.net
72.45.13.19	A+PTR	72-45-13-019-dhcp.gsv.md.atlanticbb.net
72.45.13.20	A	72-45-13-020-dhcp.gsv.md.atlanticbb.net
72.45.13.23	A	72-45-13-023-dhcp.gsv.md.atlanticbb.net
72.45.13.31	A	72-45-13-031-dhcp.gsv.md.atlanticbb.net
72.45.13.33	A+PTR	72-45-13-033-dhcp.gsv.md.atlanticbb.net
72.45.13.39	A	72-45-13-039-dhcp.gsv.md.atlanticbb.net
72.45.13.46	A	72-45-13-046-dhcp.gsv.md.atlanticbb.net
72.45.13.49	A+PTR	72-45-13-049-dhcp.gsv.md.atlanticbb.net
72.45.13.60	A	72-45-13-060-dhcp.gsv.md.atlanticbb.net
72.45.13.61	A	72-45-13-061-dhcp.gsv.md.atlanticbb.net
72.45.13.66	A+PTR	72-45-13-066-dhcp.gsv.md.atlanticbb.net
72.45.13.67	A+PTR	72-45-13-067-dhcp.gsv.md.atlanticbb.net
72.45.13.69	A	72-45-13-069-dhcp.gsv.md.atlanticbb.net
72.45.13.72	A+PTR	72-45-13-072-dhcp.gsv.md.atlanticbb.net
72.45.13.74	A+PTR	72-45-13-074-dhcp.gsv.md.atlanticbb.net
72.45.13.82	A+PTR	72-45-13-082-dhcp.gsv.md.atlanticbb.net
72.45.13.83	A+PTR	72-45-13-083-dhcp.gsv.md.atlanticbb.net
72.45.13.88	A+PTR	72-45-13-088-dhcp.gsv.md.atlanticbb.net
72.45.13.97	A+PTR	72-45-13-097-dhcp.gsv.md.atlanticbb.net
72.45.13.103	A	72-45-13-103-dhcp.gsv.md.atlanticbb.net
72.45.13.111	A	72-45-13-111-dhcp.gsv.md.atlanticbb.net
72.45.13.119	A	72-45-13-119-dhcp.gsv.md.atlanticbb.net
72.45.13.122	A+PTR	72-45-13-122-dhcp.gsv.md.atlanticbb.net
72.45.13.123	A+PTR	72-45-13-123-dhcp.gsv.md.atlanticbb.net
72.45.13.135	A	72-45-13-135-dhcp.gsv.md.atlanticbb.net
72.45.13.140	A	72-45-13-140-dhcp.gsv.md.atlanticbb.net
72.45.13.141	A	72-45-13-141-dhcp.gsv.md.atlanticbb.net
72.45.13.145	PTR	d-72-45-13-145.mdde.cpe.atlanticbb.net
72.45.13.148	A	72-45-13-148-dhcp.gsv.md.atlanticbb.net
72.45.13.154	PTR	d-72-45-13-154.mdde.cpe.atlanticbb.net
72.45.13.154	A	72-45-13-154-dhcp.gsv.md.atlanticbb.net
72.45.13.156	A	72-45-13-156-dhcp.gsv.md.atlanticbb.net
72.45.13.158	A	72-45-13-158-dhcp.gsv.md.atlanticbb.net
72.45.13.162	A+PTR	72-45-13-162-dhcp.gsv.md.atlanticbb.net
72.45.13.172	A	72-45-13-172-dhcp.gsv.md.atlanticbb.net
72.45.13.174	A	72-45-13-174-dhcp.gsv.md.atlanticbb.net
72.45.13.183	A	72-45-13-183-dhcp.gsv.md.atlanticbb.net
72.45.13.185	A+PTR	72-45-13-185-dhcp.gsv.md.atlanticbb.net
72.45.13.186	A+PTR	72-45-13-186-dhcp.gsv.md.atlanticbb.net
72.45.13.188	A	72-45-13-188-dhcp.gsv.md.atlanticbb.net
72.45.13.191	A	72-45-13-191-dhcp.gsv.md.atlanticbb.net
72.45.13.194	A+PTR	72-45-13-194-dhcp.gsv.md.atlanticbb.net
72.45.13.195	A+PTR	72-45-13-195-dhcp.gsv.md.atlanticbb.net
72.45.13.197	A	72-45-13-197-dhcp.gsv.md.atlanticbb.net
72.45.13.205	A	72-45-13-205-dhcp.gsv.md.atlanticbb.net
72.45.13.210	A+PTR	72-45-13-210-dhcp.gsv.md.atlanticbb.net
72.45.13.215	A	72-45-13-215-dhcp.gsv.md.atlanticbb.net
72.45.13.218	A+PTR	72-45-13-218-dhcp.gsv.md.atlanticbb.net
72.45.13.225	A+PTR	72-45-13-225-dhcp.gsv.md.atlanticbb.net
72.45.13.229	A	72-45-13-229-dhcp.gsv.md.atlanticbb.net
72.45.13.230	A	72-45-13-230-dhcp.gsv.md.atlanticbb.net
72.45.13.240	A+PTR	72-45-13-240-dhcp.gsv.md.atlanticbb.net
72.45.13.244	A	mail.linsilee.com
72.45.13.244	A	hvia.org
72.45.13.244	A	linsilee.com
72.45.13.250	A+PTR	72-45-13-250-dhcp.gsv.md.atlanticbb.net
72.45.13.253	A	72-45-13-253-dhcp.gsv.md.atlanticbb.net
72.45.13.255	A	72-45-13-255-dhcp.gsv.md.atlanticbb.net
72.45.14.2	PTR	72-45-14-002-dhcp.gsv.md.atlanticbb.net
72.45.14.49	PTR	72-45-14-049-dhcp.gsv.md.atlanticbb.net
72.45.14.66	A	72-45-14-066-dhcp.gsv.md.atlanticbb.net
72.45.14.104	A+PTR	72-45-14-104-dhcp.gsv.md.atlanticbb.net
72.45.14.104	A	jrw-ti.info
72.45.14.207	A	champnas.synology.me
72.45.14.207	A	72-45-14-207-dhcp.gsv.md.atlanticbb.net
72.45.14.249	A+PTR	72-45-14-249-dhcp.gsv.md.atlanticbb.net
72.45.15.19	PTR	72-45-15-019-dhcp.gsv.md.atlanticbb.net
72.45.15.59	PTR	72-45-15-059-dhcp.gsv.md.atlanticbb.net