Robtex

Up: 208.53.40.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 208.53.40.0/23
Down right: 208.53.42.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
208.53.40.3	A+PTR	server.skoggy.com
208.53.40.3	PTR	mail.topedgeservices.com
208.53.40.3	PTR	mail.topsurfer.com
208.53.40.4	PTR	208-53-40-4.c7dc.com
208.53.40.4	A	bcfranchise.com
208.53.40.4	A	ns2.skoggy.com
208.53.40.7	PTR	top.taftster.com
208.53.40.8	PTR	server.taftster.com
208.53.40.8	A	ns2.taftster.com
208.53.40.11	PTR	208-53-40-11.c7dc.com
208.53.40.12	PTR	208-53-40-12.c7dc.com
208.53.40.13	PTR	208-53-40-13.c7dc.com
208.53.40.26	A	thegmandrive.com
208.53.40.36	PTR	zillidex.com
208.53.40.37	PTR	zillidex.com
208.53.40.38	PTR	zillidex.com
208.53.40.39	PTR	zillidex.com
208.53.40.40	PTR	proagentwebsites.com
208.53.40.40	A	sparrowhomes.com
208.53.40.40	A	clarkcountyhomehub.com
208.53.40.41	PTR	mail.proagentwebsites.com
208.53.40.42	PTR	proagentwebsites.com
208.53.40.43	PTR	proagentwebsites.com
208.53.40.44	PTR	proagentwebsites.com
208.53.40.45	PTR	proagentwebsites.com
208.53.40.46	PTR	proagentwebsites.com
208.53.40.50	A	brandonandkallee.com
208.53.40.51	PTR	208-53-40-51.c7dc.com
208.53.40.54	A	menzformal.com
208.53.40.111	PTR	ns2.tierfour.net
208.53.40.111	A	ns2.uvnet.net
208.53.40.127	PTR	208-53-40-127.c7dc.com
208.53.41.9	PTR	208-53-41-9.c7dc.com
208.53.41.10	PTR	208-53-41-10.c7dc.com
208.53.41.11	PTR	mail.soniplex.com
208.53.41.12	PTR	208-53-41-12.c7dc.com
208.53.41.13	PTR	208-53-41-13.c7dc.com
208.53.41.67	A	msfax01dr.onfile.com
208.53.41.76	PTR	mail.mybudge.com
208.53.41.76	A	perxie.com
208.53.41.90	A	mail.scrapbookboutiqueonline.com
208.53.41.90	A	mail.mymemoriessuite.tv
208.53.41.90	A	cosmeticssafety.org
208.53.41.91	PTR	zimbra.ewg.org
208.53.41.167	PTR	post.themasons.us
208.53.41.168	PTR	208-53-41-168.c7dc.com
208.53.41.169	PTR	208-53-41-169.c7dc.com
208.53.41.169	A	logicalfront.com
208.53.41.169	A	www.logicalfront.com
208.53.41.174	PTR	208-53-41-174.c7dc.com
208.53.41.174	A	cirrussync.com
208.53.41.175	PTR	208-53-41-175.c7dc.com
208.53.41.175	A	mail.cirrussync.com
208.53.41.180	PTR	208-53-41-180.c7dc.com
208.53.41.180	A	myslcondo.com
208.53.41.180	A	www.i15core.utah.gov
208.53.41.182	A	jpmorganlearning.com
208.53.41.189	PTR	mail.d8i.com
208.53.41.190	PTR	208-53-41-190.c7dc.com
208.53.41.190	A	coffeeshepherd.com
208.53.41.190	A	horrormoviemonth.com
208.53.42.39	PTR	208-53-42-39.c7dc.com
208.53.42.136	PTR	208-53-42-136.c7dc.com
208.53.42.139	PTR	208-53-42-139.c7dc.com
208.53.42.165	PTR	208-53-42-165.c7dc.com
208.53.42.186	PTR	208-53-42-186.c7dc.com
208.53.42.186	A	mail.nashengraving.com
208.53.43.174	A	ns2.ts-dev.net
208.53.43.200	PTR	208-53-43-200.c7dc.com
208.53.43.200	A	mail.trigonahosting.co.cr
208.53.43.201	A	mail.ibert.org
208.53.43.203	PTR	208-53-43-203.c7dc.com
208.53.43.204	PTR	208-53-43-204.c7dc.com