Robtex

Up: 69.56.8.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 69.56.12.0/23
Down right: 69.56.14.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
69.56.13.8	A+PTR	mail1.lzmail.lifezette.com
69.56.13.9	A+PTR	mail2.lzmail.lifezette.com
69.56.13.137	A	mail1.karmaloop-mail.com
69.56.13.233	A	mail1.freeslideclx.com
69.56.13.236	A	mail2.freeslideclx.com
69.56.14.1	A	preferencecentral.org
69.56.14.8	A	hostmaster.hillcountryconservancynews.org
69.56.14.8	A	hillcountryconservancynews.org
69.56.14.9	A	mail1.hillcountryconservancynews.org
69.56.14.10	A	mail2.hillcountryconservancynews.org
69.56.14.235	A	coldfusionserverhosting.com
69.56.15.1	A+PTR	ns2.texasdns.com
69.56.15.1	A	ns2.commanddns.com
69.56.15.1	A	members.efashionsolutions.com
69.56.15.7	A+PTR	swip.skylist.net
69.56.15.12	A+PTR	datranops-chansey.skylist.net
69.56.15.14	A	licensing-cn.skylist.net
69.56.15.14	A	licensing.skylist.net
69.56.15.19	A	ns-mew.skylist.net
69.56.15.20	A	zenoss-cn-old.skylist.net
69.56.15.21	A	zenoss-64.skylist.net
69.56.15.22	A	zenoss-hub.skylist.net
69.56.15.23	PTR	old.www.skylist.net
69.56.15.23	A	hostmaster.skylist.com
69.56.15.25	A	track-sms.skylist.net
69.56.15.26	A+PTR	zenoss-cn-64.skylist.net
69.56.15.26	A+PTR	zenoss-cn-64.postup-digital.com
69.56.15.31	A	unsubscribecentral.biz
69.56.15.31	A	unsubscribe-central.net
69.56.15.31	A	unsubscribe-central.org
69.56.15.47	A	fb.skylist.net
69.56.15.50	PTR	www.efeedbacktrk.com
69.56.15.50	A	www.email.dandb.com
69.56.15.50	A	click1.e.westernjournalism.com
69.56.15.54	A	stormpostdemo.datranmedia.com
69.56.15.56	A	mail2.datranmedia.com
69.56.15.61	A+PTR	ns2.contextweb.com
69.56.15.61	A	ns2.pulsepoint.com
69.56.15.74	A	mail2.mail.idshield.com
69.56.15.85	A	seeds.unsubcentral.com
69.56.15.96	A	unsubcentral.com
69.56.15.98	A	efeedbacktrk.com
69.56.15.112	A+PTR	mail1.stormpostdemo.com
69.56.15.112	A	stormpostdemo.com
69.56.15.112	A	hostmaster.stormpostdemo.com
69.56.15.113	PTR	mail2.stormpostdemo.com
69.56.15.114	PTR	mail3.stormpostdemo.com
69.56.15.115	PTR	mail4.stormpostdemo.com
69.56.15.116	A+PTR	mail5.stormpostdemo.com
69.56.15.117	A+PTR	mail6.stormpostdemo.com
69.56.15.118	A+PTR	mail7.stormpostdemo.com
69.56.15.119	A+PTR	mail8.stormpostdemo.com
69.56.15.123	A	datran-ops.skylist.net
69.56.15.137	A+PTR	test.versadb.com
69.56.15.137	A+PTR	versadb.skylist.net
69.56.15.137	PTR	versadb.postup-digital.com
69.56.15.166	A	testthis.skylist.net
69.56.15.170	A+PTR	zenoss-old.skylist.net
69.56.15.170	A+PTR	zenoss-old.postup-digital.com
69.56.15.191	PTR	paphi.org
69.56.15.191	A+PTR	grimlock.postup-digital.com
69.56.15.191	PTR	grimlock.skylist.net
69.56.15.192	A	db.skylist.net
69.56.15.196	A	help.skylist.net
69.56.15.205	A+PTR	incoming.skylist.net
69.56.15.206	PTR	mail.postup-digital.com
69.56.15.206	A+PTR	mail.skylist.net
69.56.15.206	A	mail.skylist.com
69.56.15.241	A	www.opt-out-1101.com
69.56.15.241	A	unsub.unsubcentral.com
69.56.15.241	A	www.opt-out-1012.com