Robtex

Up: 74.4.16.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 74.4.16.0/22
Down right: 74.4.20.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
74.4.16.1	PTR	tn-74-4-16-1.messaging.embarqnow.net
74.4.16.2	A+PTR	tn-74-4-16-2.messaging.embarqnow.net
74.4.16.3	A	tn-74-4-16-3.messaging.embarqnow.net
74.4.16.5	A	tn-74-4-16-5.messaging.embarqnow.net
74.4.16.7	A	tn-74-4-16-7.messaging.embarqnow.net
74.4.16.8	PTR	tn-74-4-16-8.messaging.embarqnow.net
74.4.16.9	A+PTR	tn-74-4-16-9.messaging.embarqnow.net
74.4.16.120	A+PTR	tn-74-4-16-120.messaging.embarqnow.net
74.4.16.202	A+PTR	tn-74-4-16-202.messaging.embarqnow.net
74.4.16.202	A	cnamgui.centurylink.com
74.4.16.244	A	messaging.embarqnow.net
74.4.16.244	A	atac.centurylinkservices.net
74.4.16.244	A	tn-74-4-16-244.messaging.embarqnow.net
74.4.16.250	A	centrexadmin.embarqnow.net
74.4.19.1	PTR	in-74-4-19-1.centurylinkservices.net
74.4.19.130	A	mail.simplyyourmortgagepartner.com
74.4.19.154	PTR	mail.fitfibers.com
74.4.19.155	PTR	in-74-4-19-155.centurylinkservices.net
74.4.19.187	PTR	dns-auth-5.embarqservices.net
74.4.19.220	A	barracuda.timesnews.net
74.4.19.226	PTR	in-74-4-19-226.centurylinkservices.net
74.4.19.226	A	mail.markiiiquote.com
74.4.19.226	A	markiiirealty.com
74.4.19.250	PTR	csmestnjhcc101.centurylinkservices.net
74.4.20.2	A	secure.johnsoncitytn.org
74.4.20.4	A+PTR	ns1.johnsoncitytn.org
74.4.20.5	A+PTR	ns2.johnsoncitytn.org
74.4.20.46	A+PTR	sftp.johnsoncitytn.org
74.4.20.50	A+PTR	jcpdw.johnsoncitytn.org
74.4.20.78	A	jctmyride.com
74.4.20.140	A+PTR	autodiscover.johnsoncitytn.org
74.4.20.140	A+PTR	mail.johnsoncitytn.org
74.4.20.143	A+PTR	atlantis.johnsoncitytn.org
74.4.20.144	A+PTR	columbia.johnsoncitytn.org
74.4.20.199	A	sharefile.johnsoncitytn.org
74.4.21.1	A+PTR	rooter.jonesmedia.biz
74.4.21.3	PTR	fw01.xtn.net
74.4.21.21	A+PTR	ns1.apgeast.biz
74.4.21.21	A	dns01.xtn.net
74.4.21.21	A	ns1.jonesmedia.biz
74.4.21.22	PTR	ns2.apgeast.biz
74.4.21.22	A	ns2.jonesmedia.biz
74.4.21.25	PTR	web.jonesmedia.biz
74.4.21.25	A	highcountryhalfprice.com
74.4.21.25	A	discovergreeneville.com
74.4.21.35	A+PTR	postoffice.jonesmedia.biz
74.4.21.35	A	mail.tri-citiesonline.com
74.4.21.35	A	pop.xtn.net
74.4.21.36	PTR	smtp1411.redcondor.net
74.4.21.36	A	hawkinsmarketplace.com.mx3.jonesmedia.rcimx.net
74.4.21.40	PTR	postoffice.jonesmedia.biz
74.4.21.40	A	smtp.jonesmedia.biz
74.4.21.253	PTR	samba.xtn.net
74.4.22.20	A+PTR	ironport.theheartcenter.net
74.4.22.20	A	mail.theheartcenter.net
74.4.22.23	A	ironport2.theheartcenter.net
74.4.22.65	PTR	bill.holstonhome.org
74.4.22.66	A	mail.holstonhome.org
74.4.22.66	A	owa.holstonhome.org
74.4.22.67	PTR	gateway.holstonhome.org
74.4.22.68	PTR	vpn.holstonhome.org
74.4.22.68	A	gateway.holstonhome.org
74.4.22.81	A+PTR	lmhexch.lmh.lmhcare.org
74.4.22.81	A	mail.lmhcare.org
74.4.22.87	A	connect.lmhcare.org
74.4.22.89	A	mylmh.lmhcare.org
74.4.22.94	A	ns1.lmhcare.org
74.4.22.115	A	www.sofha.net
74.4.22.116	A+PTR	mail.sofha.net
74.4.22.116	A	mail.medspecialistsjc.net
74.4.22.135	A+PTR	mail.oldtownbanking.com
74.4.22.135	A	mail.otbanking.com
74.4.22.143	A+PTR	mail.bankoftennessee.com
74.4.22.143	A	mail.mountaincommunitybank.com
74.4.22.143	A	mail.bt-is.com
74.4.22.144	A+PTR	zixvpm.bankoftennessee.com
74.4.22.150	A	mail.mountaincommunitybank.com
74.4.22.150	A	mail.cartercountybank.com
74.4.22.151	A	mail.alliancebankandtrust.com
74.4.22.154	A	mail.greatstatebank.com
74.4.22.158	A+PTR	mail.mcbvi.com
74.4.22.158	A	mail.merchantscommercialbank.com
74.4.22.165	A+PTR	mail.pbknc.com
74.4.22.166	A+PTR	mail.unionbanknc.com