Robtex

Up: 72.20.136.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 72.20.137.0/25
Down right: 72.20.137.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.20.137.26	A	fronterrageosciences.com
72.20.137.36	A	mail.apnix.net
72.20.137.101	A	huddlestonco.com
72.20.137.101	A	mail.huddlestonco.com
72.20.137.101	A	*.huddlestonco.com
72.20.137.102	A	*.ppp-co.com
72.20.137.102	A	cliff.pppco.com
72.20.137.102	A	cliff.ppp-co.com
72.20.137.104	A	*.continentaloperating.com
72.20.137.104	A	continentaloperating.com
72.20.137.104	A	cliff.continentaloperating.com
72.20.137.106	A	newman.continentaloperating.com
72.20.137.106	A	newman.huddlestonco.com
72.20.137.106	A	newman.pppco.com
72.20.137.137	PTR	www.harriscountyhealth.com
72.20.137.137	A	scjrq.com
72.20.137.137	A	www.hd.co.harris.tx.us
72.20.137.170	PTR	www.cpcdms.com
72.20.137.212	A	email.seanamic.com
72.20.137.212	A	email.hl-tech.net
72.20.137.212	A	mail.geocables.com