Robtex

Up: 72.28.128.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 72.28.128.0/20
Down right: 72.28.144.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.28.128.0	PTR	72-28-128-000-dhcp.mia.fl.atlanticbb.net
72.28.128.154	A	72-28-128-154-dhcp.mia.fl.atlanticbb.net
72.28.128.162	A	72-28-128-162-dhcp.mia.fl.atlanticbb.net
72.28.129.80	A	72-28-129-080-dhcp.mia.fl.atlanticbb.net
72.28.129.94	A	72-28-129-094-dhcp.mia.fl.atlanticbb.net
72.28.129.247	A	72-28-129-247-dhcp.mia.fl.atlanticbb.net
72.28.130.9	A	ns4.secure-xp.net
72.28.130.42	A	72-28-130-042-dhcp.mia.fl.atlanticbb.net
72.28.130.153	A	golownia.com
72.28.131.234	A	ns4.secure-xp.net
72.28.132.36	A	72-28-132-036-dhcp.mia.fl.atlanticbb.net
72.28.133.36	A	72-28-133-036-dhcp.mia.fl.atlanticbb.net
72.28.133.195	A+PTR	72-28-133-195-dhcp.mia.fl.atlanticbb.net
72.28.134.16	A	grynsztein.com
72.28.136.192	A	72-28-136-192-dhcp.mia.fl.atlanticbb.net
72.28.138.161	A+PTR	72-28-138-161-dhcp.mia.fl.atlanticbb.net
72.28.139.162	A+PTR	72-28-139-162-dhcp.mia.fl.atlanticbb.net
72.28.140.3	PTR	72-28-140-003-dhcp.mia.fl.atlanticbb.net
72.28.140.3	A	elpasusa.com
72.28.141.93	A	72-28-141-093-dhcp.mia.fl.atlanticbb.net
72.28.141.97	A+PTR	72-28-141-097-dhcp.mia.fl.atlanticbb.net
72.28.141.97	A	www.grynsztein.com
72.28.141.97	A	howmanydayssinceziggyfuckedbobo.com
72.28.142.221	A	mail.integralmiami.com
72.28.143.83	A	13053362943.com
72.28.144.3	PTR	72-28-144-003-dhcp.mia.fl.atlanticbb.net
72.28.144.8	A	ddpsa.us
72.28.144.28	A	mail.ddpsa.us
72.28.145.162	PTR	72-28-145-162-dhcp.mia.fl.atlanticbb.net
72.28.145.224	PTR	72-28-145-224-dhcp.mia.fl.atlanticbb.net
72.28.149.57	A	brian-melendez.net
72.28.151.2	PTR	72-28-151-002-dhcp.mia.fl.atlanticbb.net
72.28.151.42	A	www.twiners.com
72.28.152.38	PTR	72-28-152-038-dhcp.mia.fl.atlanticbb.net
72.28.152.115	PTR	72-28-152-115-dhcp.mia.fl.atlanticbb.net
72.28.152.148	PTR	d-72-28-152-148.fl.cpe.atlanticbb.net
72.28.152.148	A	terraus.com
72.28.152.148	A	mail.elawonline.net
72.28.153.99	PTR	72-28-153-099-dhcp.mia.fl.atlanticbb.net
72.28.158.200	A	72-28-158-200-dhcp.mia.fl.atlanticbb.net
72.28.158.229	A	awfuckyeah.com
72.28.159.41	A	72-28-159-041-dhcp.mia.fl.atlanticbb.net
72.28.159.107	A	rebelserver.changeip.net