Robtex

Up: 216.93.66.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 216.93.66.0/25
Down right: 216.93.66.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.93.66.5	A+PTR	pop4.mx.voyager.net
216.93.66.5	A	tdi.net
216.93.66.31	PTR	mail.bigbrains.net
216.93.66.51	PTR	mail.bigbrains.net
216.93.66.72	A+PTR	lmtp10.mx.voyager.net
216.93.66.78	A+PTR	sc0.mx.voyager.net
216.93.66.79	A+PTR	lmtp12.mx.voyager.net
216.93.66.80	A+PTR	mx0.mx.voyager.net
216.93.66.80	A	portia.ics-online.net
216.93.66.81	A+PTR	mx1.mx.voyager.net
216.93.66.86	A	mx6.mx.voyager.net
216.93.66.89	A	mx9.mx.voyager.net
216.93.66.90	A+PTR	mail0.mx.core.com
216.93.66.91	A	mail1.mx.core.com
216.93.66.92	A	mail2.mx.core.com
216.93.66.93	A+PTR	mx10.mx.voyager.net
216.93.66.94	A	mx11.mx.voyager.net
216.93.66.110	PTR	a.mx.voyager.net
216.93.66.110	A	serv02.net-link.net
216.93.66.110	A	a.mx.voyagerhosting.net
216.93.66.111	PTR	b.mx.voyager.net
216.93.66.111	A	b.mx.voyagerhosting.net
216.93.66.111	A	b.mx.tdin.com
216.93.66.112	PTR	c.mx.voyager.net
216.93.66.120	A+PTR	mail.infinet.com
216.93.66.125	A+PTR	lnng.execpc.com
216.93.66.130	A	mail.infinet.com
216.93.66.135	A+PTR	lnng.execpc.com
216.93.66.143	PTR	pop.tdi.net
216.93.66.144	PTR	pop.ais.net
216.93.66.147	PTR	pop.dmci.net
216.93.66.149	PTR	pop.netdirect.net
216.93.66.149	A	quiknet.net
216.93.66.151	PTR	pop.pclink.com
216.93.66.151	A	pclink.com
216.93.66.154	PTR	pop.hsonline.net
216.93.66.155	PTR	pop.stratos.net
216.93.66.155	A	stratos.net
216.93.66.156	PTR	mail.core.com
216.93.66.158	PTR	mail.myaxiom.net
216.93.66.159	PTR	mail.coshocton.com
216.93.66.161	PTR	mail.richnet.net
216.93.66.164	PTR	mail.en.com
216.93.66.164	A	mail-in.en.com
216.93.66.173	PTR	pop.tdi.net
216.93.66.174	PTR	pop.ais.net
216.93.66.177	PTR	pop.dmci.net
216.93.66.179	PTR	pop.netdirect.net
216.93.66.179	A	quiknet.net
216.93.66.181	PTR	pop.pclink.com
216.93.66.181	A	pclink.com
216.93.66.184	PTR	pop.hsonline.net
216.93.66.185	PTR	pop.stratos.net
216.93.66.185	A	stratos.net
216.93.66.186	PTR	mail.core.com
216.93.66.188	PTR	mail.myaxiom.net
216.93.66.189	PTR	mail.coshocton.com
216.93.66.191	PTR	mail.richnet.net
216.93.66.194	PTR	mail.en.com
216.93.66.194	A	mail-in.en.com
216.93.66.201	A+PTR	ns1.mx.core.com
216.93.66.205	PTR	mail0.mx.voyager.net
216.93.66.206	A	mail2.mx.voyager.net
216.93.66.223	A+PTR	auth2.mx.voyager.net
216.93.66.224	A	auth3.mx.voyager.net
216.93.66.225	A	db.mx.voyager.net
216.93.66.233	A+PTR	sw3.mx.voyager.net
216.93.66.234	A	sw4.mx.voyager.net
216.93.66.237	A	lmtp8.mx.voyager.net
216.93.66.246	A	nap1.mx.voyager.net
216.93.66.249	A+PTR	lmtp1.mx.voyager.net
216.93.66.253	A	lmtp3.mx.voyager.net