Robtex

Up: 12.43.64.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 12.43.80.0/21
Down right: 12.43.88.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
12.43.80.72	A	mail.aaalifeservice.com
12.43.80.226	A	mail.roseoffices.com
12.43.81.18	A	mail.shocco.org
12.43.81.18	A	ns3.shocco.org
12.43.81.27	A+PTR	ad01.aladyn.com
12.43.81.67	A	mail.maridancorp.com
12.43.81.88	A	ns1.maridancorp.com
12.43.81.244	A	ns2.realtysouth.com
12.43.81.244	A	apollo.realtysouth.com
12.43.81.244	A	ns1.realtysouth.com
12.43.81.245	A	www.realtysouthnewhomes.com
12.43.84.115	A	dfs-exchng.dfsfin.com
12.43.84.116	A	dfsequipment.com
12.43.84.116	A	dfsfin.com
12.43.84.116	A	www.dfsfin.com
12.43.84.121	A	dfsfin.com
12.43.84.121	A	www.dfsfin.com
12.43.85.179	A	ftp.continentalgeneral.com
12.43.87.166	A	mail.mct-comcar.com
12.43.87.166	A	mail.mct.comcar.com
12.43.87.175	A	mct.comcar.com
12.43.88.1	A+PTR	adm-maro-stl.admworld.com
12.43.88.2	A	adm-maro-chi.admworld.com
12.43.88.3	A+PTR	adm-maro-vstl.admworld.com
12.43.88.4	A	adm-maro-vchi.admworld.com
12.43.88.18	A	ibm.admworld.com
12.43.88.20	A	dns1.admworld.com
12.43.88.25	A+PTR	admcrs.com
12.43.88.25	PTR	www.admcrs.com
12.43.88.25	A	gateway.admcrs.com
12.43.88.43	A	webapps.admworld.com
12.43.88.50	A	deuce.admworld.com
12.43.88.51	A	lowrider.admworld.com
12.43.88.52	A	fatboy.admworld.com
12.43.88.53	A	deuce.admworld.com
12.43.88.70	A+PTR	admnaexht1.adm.com
12.43.88.75	A	www.goldenpeanut.com
12.43.88.85	A	store.adm.com
12.43.88.95	A+PTR	www.e-adm.com
12.43.88.100	A+PTR	smtp.adm.com
12.43.88.100	A	mail.adm.com
12.43.88.106	A	admex10hub1.adm.com
12.43.88.110	A	smtp.adm.com
12.43.88.110	A	smtp.admworld.com
12.43.88.111	A	smtp.adm.com
12.43.88.111	A	smtp.admworld.com
12.43.88.112	A+PTR	smtp.admworld.com
12.43.88.112	A	smtp.adm.com
12.43.88.112	A	mail3.admworld.com
12.43.88.130	A	myonexm.adm.com
12.43.88.141	A+PTR	myim.adm.com
12.43.88.141	PTR	myim.admcrs.com
12.43.88.141	PTR	myim.olenex.com
12.43.88.148	A	myftp.adm.com
12.43.88.150	PTR	www.admworld.com
12.43.88.161	A	admusfw1.admworld.com
12.43.88.162	A+PTR	admusfw2.admworld.com
12.43.88.163	A+PTR	admusfw3.admworld.com
12.43.88.200	A+PTR	dp1.admworld.com
12.43.88.207	A+PTR	admex13ews7.adm.com
12.43.88.210	A	ey210.admworld.com
12.43.88.211	A+PTR	ey211.admworld.com
12.43.88.212	A+PTR	ey212.admworld.com
12.43.88.213	A+PTR	ey213.admworld.com
12.43.88.224	A+PTR	ey224.admworld.com
12.43.88.225	A+PTR	ey225.admworld.com
12.43.88.226	A+PTR	ey226.admworld.com
12.43.88.228	A+PTR	ey228.admworld.com
12.43.89.20	PTR	dns1.admworld.com
12.43.89.20	PTR	ws.admworld.com
12.43.89.22	A+PTR	ftp.e-adm.com
12.43.89.30	PTR	www.archer-rc.com
12.43.89.30	PTR	www.mcp.net
12.43.89.32	A	outage.e-adm.com
12.43.89.38	A+PTR	myadm.admworld.com
12.43.89.39	A	adm.jobs
12.43.89.39	A	easingmenopause.com
12.43.89.50	PTR	myftp.adm.com
12.43.89.99	PTR	vivasweet.net
12.43.89.99	PTR	vivasweet.org
12.43.89.99	A+PTR	origin.adm.com
12.43.89.210	A+PTR	mymobile.adm.com
12.43.89.210	A+PTR	mymobile.admworld.com
12.43.89.238	A+PTR	webtrends.adm.com
12.43.89.238	A+PTR	webtrends.admworld.com
12.43.89.240	A	gtm01corp.e-adm.com
12.43.90.120	A	m.admcrs.com
12.43.90.219	A	admsdx.adm.com
12.43.90.220	A	myemail.gslbext.adm.com
12.43.90.246	A+PTR	myvpn.adm.com
12.43.91.11	A	ftp.admcrs.com
12.43.91.11	A	demo.admcrs.com
12.43.91.11	A	web1.admcrs.com
12.43.91.18	A+PTR	test.admcrs.com
12.43.91.23	A	legacy.gslbext.adm.com
12.43.91.23	A	legacy.adm.com
12.43.91.39	A	admhealth.com
12.43.91.62	A+PTR	mqseries.admworld.com
12.43.91.67	A+PTR	benefits.admworld.com
12.43.91.69	A+PTR	ddr.admworld.com
12.43.91.71	A+PTR	admsao.com
12.43.91.71	A+PTR	www.admsao.com
12.43.91.90	A	list.admworld.com
12.43.91.92	A	list.e-adm.com
12.43.91.96	A+PTR	tlist.admworld.com
12.43.91.231	A+PTR	admani.com
12.43.91.231	A+PTR	admsecondcrop.com
12.43.91.231	A+PTR	www.admani.com
12.43.92.20	A	smtp.copeplastics.com
12.43.92.90	A	interacq.com
12.43.92.91	A	midwestls.com
12.43.92.91	A	www.midwestls.com
12.43.92.94	A	mail.midwestls.com
12.43.93.83	A	mail.pandocare.com
12.43.93.199	A	mail2.mhchester.com
12.43.93.199	A	mail.mhchester.com
12.43.94.1	A	air2.lambert-stl.org
12.43.94.14	A	mx2.lambert-stl.org
12.43.94.14	A	mx2.flystl.com
12.43.95.66	A	mail.centeroil.com
12.43.95.116	A	www.surdyke.com
12.43.95.116	A	surdyke.com
12.43.95.118	A	surdykeport20.com
12.43.95.118	A	surdykemotorsports.com