Robtex

Up: 216.53.128.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 216.53.128.0/23
Down right: 216.53.130.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.53.130.2	PTR	ns1.mpinet.com
216.53.130.2	A	ns1.intersrv.com
216.53.130.2	A	ns1.mpinet.net
216.53.130.3	PTR	ns2.mpinet.com
216.53.130.3	A	ns2.mpinet.net
216.53.130.3	A	ns2.digital.net
216.53.130.4	A	ns3.mpinet.net
216.53.130.6	A+PTR	smtp.mpinet.com
216.53.130.6	A	mail.durocom.com
216.53.130.13	PTR	itdns.smartcity.net
216.53.130.17	A	bigip-1.mpinet.com
216.53.130.24	A+PTR	bambam.mpinet.com
216.53.130.24	A	www.cil.gulf.net
216.53.130.28	A+PTR	smtp-0.mpinet.com
216.53.130.36	A	dns-0.mpinet.com
216.53.130.48	PTR	ddi.digital.net
216.53.130.51	PTR	gatorzone.com
216.53.130.65	A	listserv.mpinet.com
216.53.130.70	PTR	moltar.mpinet.com
216.53.130.70	A	hospice.boone.net
216.53.130.70	A	stlukes.boone.net
216.53.130.111	PTR	gatorzone.com
216.53.130.115	A	realserver.mpinet.com
216.53.130.137	PTR	home.digital.net
216.53.130.143	PTR	home.mpinet.net
216.53.130.180	PTR	smtp-0.mpinet.com
216.53.130.200	PTR	etrn.mpinet.com
216.53.131.100	A+PTR	parked.mpinet.com
216.53.131.100	A	priceeasy.net
216.53.131.100	A	lovingnature.net
216.53.131.101	PTR	web1.mpinet.com
216.53.131.105	A	genesis.mpinet.net
216.53.131.110	PTR	ns1.acmecargo.com
216.53.131.111	PTR	iu.net
216.53.131.112	PTR	ns2.acmecargo.com
216.53.131.123	A+PTR	gandalf.mpinet.net
216.53.131.127	A	advancedadmin.com
216.53.131.135	A	volarishosting.com
216.53.131.135	A	netops.mpinet.com
216.53.131.137	A	support.mpinet.com
216.53.131.181	A	calvin.metrolink.net
216.53.131.190	A+PTR	ozzy.mpinet.net
216.53.131.190	A	bookangels.com
216.53.131.190	A	thomasocasey.com
216.53.131.194	A	cobra.mpinet.com
216.53.131.200	A+PTR	etrn.mpinet.com
216.53.131.200	A	corpserv.mpinet.com
216.53.131.200	A	ntp.mpinet.com
216.53.131.202	A	secure.gulf.net