Robtex

Up: 74.81.128.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 74.81.128.0/20
Down right: 74.81.144.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
74.81.130.22	A	dns3.csonline.com
74.81.130.22	A	ns3.csonline.com
74.81.130.71	A	als93.com
74.81.132.22	A	libertycountyonline.net
74.81.132.26	A	mail2.imsday.com
74.81.133.44	A	mail.anbank.net
74.81.133.99	A+PTR	mail.nutechenergy.com
74.81.133.99	A	mail.porolabs.com
74.81.133.99	A	ims-74-81-133-99.imsday.com
74.81.133.130	PTR	ims-74-81-133-130.imsday.com
74.81.133.154	A	dns.barbershill.isd.esc4.net
74.81.133.194	PTR	ims-74-81-133-194.imsday.com
74.81.133.197	A	itdeptwesthardin.org
74.81.134.2	PTR	ims-74-81-134-2.imsday.com
74.81.134.13	A	www.imswebs.com
74.81.134.14	A	bheagle.net
74.81.134.20	A	dns1.csonline.com
74.81.134.20	A	ns1.csonline.com
74.81.134.36	A	libertyball.com
74.81.134.40	A	dns2.csonline.com
74.81.134.40	A	ns2.csonline.com
74.81.134.44	A	swaldman.com
74.81.134.66	PTR	ims-74-81-134-66.imsday.com
74.81.134.66	A	tastebudevent.com
74.81.134.66	A	www.standardfasteners.com
74.81.134.67	PTR	ims-74-81-134-67.imsday.com
74.81.134.67	A	9754southport.com
74.81.134.212	A	randymeche.com
74.81.134.212	A	www.randymeche.com
74.81.134.232	A	mail.joshuaholt.net
74.81.134.232	A	mail.fsdev.com
74.81.134.232	A	ims-74-81-134-232.imsday.com
74.81.140.225	PTR	mail.36db.com
74.81.140.227	PTR	toad.36db.com
74.81.140.227	A	ns.63263.20140814.deleted.gkg.net
74.81.140.227	A	ci.sweeny.tx.us
74.81.140.232	A+PTR	pyro.netyeti.com
74.81.140.235	A	avalanche.36db.com
74.81.142.15	A	ns1.wwcdns.com
74.81.142.48	A	wwcvcas.wildwell.com
74.81.144.71	A	mail3.mustangeng.com
74.81.144.99	PTR	mail.ricetec.com
74.81.144.99	A	mail.riceselect.com
74.81.144.99	A	alvin.ricetec.com
74.81.144.104	A	www.ricetecseed.net
74.81.144.104	A	ricetecseed.net
74.81.144.139	A	email.usapsys.com
74.81.144.151	A	mail.usapnotify.com
74.81.144.202	PTR	smtp.cmaiglobal.com
74.81.145.85	PTR	iahsmail01.susser.com
74.81.145.132	A+PTR	74-81-145-132-static.hfc.comcastbusiness.net
74.81.145.132	A	vdns1.dicentral.com
74.81.145.143	A+PTR	74-81-145-143-static.hfc.comcastbusiness.net
74.81.145.143	A	www.smartturn.com
74.81.145.149	PTR	74-81-145-149-static.hfc.comcastbusiness.net
74.81.145.152	PTR	mail2.dicentral.com
74.81.145.182	A	getmtr.com
74.81.145.182	A	74-81-145-182-static.hfc.comcastbusiness.net
74.81.145.187	A	risernavigator.com
74.81.145.197	PTR	74-81-145-197-static.hfc.comcastbusiness.net
74.81.145.197	A	goodpicks.mobi
74.81.145.197	A	goodpicks.co
74.81.146.123	A	74-81-146-123-ip-static.hfc.comcastbusiness.net
74.81.146.123	A	helpme3.com
74.81.146.123	A	ud97.com
74.81.146.125	A	email.serventek.com
74.81.146.135	A	ci.tomball.tx.us
74.81.147.15	A+PTR	mail.healix.net
74.81.147.15	A	mail.healixplace.com
74.81.147.15	A	mail.spirrapharmaceuticals.com
74.81.147.37	A	mail.virdyne.com
74.81.147.45	A+PTR	74-81-147-45-static.hfc.comcastbusiness.net
74.81.147.45	A	mail.bigbadwolf.net
74.81.147.50	A	healixpharmacy.net
74.81.148.6	PTR	mail.mphcc.com
74.81.148.67	A+PTR	mail.saintanne.org
74.81.148.67	A	mail.stannecs.org
74.81.148.170	A+PTR	mail3.rocketball.com
74.81.148.201	A	mail.rocketball.com
74.81.149.80	A	jacobsclearlake.com
74.81.151.26	PTR	74-81-151-26-static.hfc.comcastbusiness.net
74.81.151.228	A	mypier30.com
74.81.151.228	A	pier30bar.com
74.81.151.254	PTR	mail.surfsidetx.net
74.81.151.254	A+PTR	74-81-151-254-static.hfc.comcastbusiness.net
74.81.156.2	PTR	ns2.swn.com
74.81.159.2	A	pix.nasleep.com
74.81.159.3	PTR	mail.usitexas.com
74.81.159.3	A	mx.nasleep.com
74.81.159.3	A	webmail.mmcollectionstx.com
74.81.159.200	PTR	mail.buc-ees.com