Robtex

Up: 72.11.192.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 72.11.192.0/23
Down right: 72.11.194.0/23

IP	Type	Hostname
72.11.192.8	PTR	72.11.192.8.ny.ny.metconnect.net
72.11.192.10	A+PTR	as1.metconnect.com
72.11.192.20	A+PTR	nsny1.metconnect.com
72.11.192.30	A	msny1.metconnect.com
72.11.192.80	PTR	72.11.192.80.ny.ny.metconnect.net
72.11.192.88	PTR	72.11.192.88.ny.ny.metconnect.net
72.11.192.109	PTR	72.11.192.109.ny.ny.metconnect.net
72.11.192.185	PTR	72.11.192.185.ny.ny.metconnect.net
72.11.192.245	PTR	72.11.192.245.ny.ny.metconnect.net
72.11.193.130	PTR	72.11.193.130.ny.ny.metconnect.net
72.11.193.169	PTR	72.11.193.169.ny.ny.metconnect.net
72.11.193.245	PTR	72.11.193.245.ny.ny.metconnect.net