Robtex

Up: 64.0.28.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 64.0.29.0/25
Down right: 64.0.29.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.0.29.7	A+PTR	64.0.29.7.ptr.us.xo.net
64.0.29.16	PTR	64.0.29.16.ptr.us.xo.net
64.0.29.18	A+PTR	servicesurveyonline.com
64.0.29.20	PTR	64.0.29.20.ptr.us.xo.net
64.0.29.21	A+PTR	64.0.29.21.ptr.us.xo.net
64.0.29.21	A	pro-opinion.com
64.0.29.23	PTR	64.0.29.23.ptr.us.xo.net
64.0.29.25	A+PTR	mail2.surveynetwork.com
64.0.29.28	PTR	proopinion.com
64.0.29.28	A	lugardeopinion.net
64.0.29.28	A	lugardeopinion.com
64.0.29.49	A	64.0.29.49.ptr.us.xo.net
64.0.29.71	A	mail.somebodyreal.com
64.0.29.72	A+PTR	sn-mail1.surveynetwork.com
64.0.29.75	PTR	sn-mail4.surveynetwork.com
64.0.29.81	A+PTR	64.0.29.81.ptr.us.xo.net
64.0.29.81	A	riteaidfeedback.com
64.0.29.81	A	telldominos.com
64.0.29.104	A+PTR	64.0.29.104.ptr.us.xo.net
64.0.29.106	A+PTR	eso.honda.com
64.0.29.107	A+PTR	fairmontmail.jdpa.com
64.0.29.108	A+PTR	64.0.29.108.ptr.us.xo.net
64.0.29.113	PTR	64.0.29.113.ptr.us.xo.net
64.0.29.123	A	64.0.29.123.ptr.us.xo.net
64.0.29.127	A+PTR	64.0.29.127.ptr.us.xo.net
64.0.29.133	A	64.0.29.133.ptr.us.xo.net
64.0.29.139	A	64.0.29.139.ptr.us.xo.net
64.0.29.142	A	64.0.29.142.ptr.us.xo.net
64.0.29.149	A+PTR	64.0.29.149.ptr.us.xo.net
64.0.29.149	A	lecafeopinion.ca
64.0.29.149	A	cafedopinion.com
64.0.29.150	A+PTR	64.0.29.150.ptr.us.xo.net
64.0.29.150	A	centrodeopinion.net
64.0.29.158	A	64.0.29.158.ptr.us.xo.net
64.0.29.161	A	64.0.29.161.ptr.us.xo.net
64.0.29.174	A	64.0.29.174.ptr.us.xo.net
64.0.29.178	A	64.0.29.178.ptr.us.xo.net
64.0.29.204	PTR	mail7.surveynetwork.com
64.0.29.215	PTR	64.0.29.215.ptr.us.xo.net
64.0.29.217	PTR	64.0.29.217.ptr.us.xo.net
64.0.29.244	PTR	ut-pmta01.nielsengpms.com
64.0.29.245	PTR	64.0.29.245.ptr.us.xo.net
64.0.29.254	A+PTR	64.0.29.254.ptr.us.xo.net