Robtex

Up: 216.144.192.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 216.144.192.0/25
Down right: 216.144.192.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.144.192.73	A+PTR	cpanel02.digitalrealm.net
216.144.192.73	A	mail.digitalrealm.net
216.144.192.73	A	www.digitalrealm.net
216.144.192.100	PTR	ip192-100.digitalrealm.net
216.144.192.100	A	serveriron.digitalrealm.net
216.144.192.104	PTR	inetsrv04.digitalrealm.net
216.144.192.117	PTR	ip192-117.digitalrealm.net
216.144.192.117	A	mail.digitalrealm.org
216.144.192.117	A	digitalrealm.org
216.144.192.118	A	digitalrealm.biz
216.144.192.124	PTR	inetsrv24.digitalrealm.net
216.144.192.124	A	mailhub.digitalrealm.net
216.144.192.130	PTR	tnmi-static-130-192-144-216.ip.telnetww.com
216.144.192.130	A	scanner.detroitonline.com
216.144.192.130	A	mailguard.digitalrealm.net
216.144.192.200	A+PTR	inetsrv01.digitalrealm.net
216.144.192.200	A	quantumvoice.com
216.144.192.200	A	www.demf.com
216.144.192.250	PTR	tnmi-static-250-192-144-216.ip.telnetww.com
216.144.192.250	A	intra.digirealm.com
216.144.192.250	A	ns3.detroitonline.com
216.144.192.252	PTR	tnmi-static-252-192-144-216.ip.telnetww.com
216.144.192.252	A	ns4.detroitonline.com