Robtex

Up: 66.185.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 66.185.0.0/21
Down right: 66.185.8.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.185.0.67	PTR	mail.dsm.sparkplugbb.net
66.185.0.67	A	mail.verde.info
66.185.0.67	A	mail.skyranchatcarefree.com
66.185.0.69	PTR	ns2.p-inet.com
66.185.0.130	A	ia0-wdsm1-130.prairieinet.net
66.185.0.134	A	ia0-wdsm1-134.prairieinet.net
66.185.0.135	A	mrtg.p-inet.com
66.185.0.137	PTR	ia0-wdsm1-137.dsm.sparkplugbb.net
66.185.0.137	A	ia0-wdsm1-137.prairieinet.net
66.185.0.164	A	ns4.sparkplug.net
66.185.0.172	A	ns5.sparkplug.net
66.185.0.208	PTR	ia0-208.dsm.sparkplugbb.net
66.185.0.208	A	ia0-208.prairieinet.net
66.185.0.210	A	ia0-210.prairieinet.net
66.185.0.219	A	dns2ia.p-inet.com
66.185.0.219	A	ns2.swwnet.com
66.185.0.224	PTR	ia0-224.dsm.sparkplugbb.net
66.185.0.224	A	ia0-224.prairieinet.net
66.185.0.252	A	config.p-inet.net
66.185.1.69	PTR	mail.parkersign.com
66.185.1.72	A	skandranon.net
66.185.1.205	PTR	ia-1-205.iowa.sparkplugbb.net
66.185.3.91	A	iowacountertops.com
66.185.3.96	PTR	mail.verdissimousa.com
66.185.3.99	PTR	ia-3-99.iowa.sparkplugbb.net
66.185.3.132	A	pbconnect.info
66.185.3.166	A	computek-inc.com
66.185.3.166	A	premieroutdoorsvcs.com
66.185.4.58	A	mail.heartlandassembly.net
66.185.4.162	PTR	ia-4-162.iowa.sparkplugbb.net
66.185.5.2	PTR	ia-5-2.iowa.sparkplugbb.net
66.185.6.194	PTR	ia-6-194.iowa.sparkplugbb.net
66.185.6.201	A	mail.lincolnwayenergy.com
66.185.7.14	PTR	ia-7-14.iowa.sparkplugbb.net
66.185.7.29	A	mail.americanheartlanddev.com
66.185.7.29	A	mail.americanheartlanddevelopment.com
66.185.8.37	PTR	smtp.4compart.com
66.185.8.38	A	www.stpaulfd.org
66.185.8.38	A	smtplast.stpaulfd.org
66.185.8.38	A	twinriversmedia.com
66.185.8.41	A	smtplast.iowaoutdoors.org
66.185.9.9	A	skandranon.org
66.185.9.9	A	skandranon.com
66.185.9.194	PTR	mail.webstercountyia.org
66.185.10.28	PTR	mail.lemarindustries.com
66.185.10.28	A	mail.hallfab.com
66.185.10.28	A	mail.midwestbearing.com
66.185.10.36	A+PTR	barracuda.deezee.com
66.185.10.36	A	mail.deezee.com
66.185.10.37	PTR	gw-v127-lwanderson-incdbahuskys.adm.dsm.sparkplugbb.net
66.185.10.37	A	bronzedoll.com
66.185.10.37	A	www.eaachapter135.org
66.185.10.130	A	digitaltrendsolutions.com
66.185.11.34	A	ns2.dsinps.com
66.185.11.39	A	outlook.dsisystemsinc.com
66.185.12.0	PTR	66-185-12-0.dsm.sparkplugbb.net
66.185.14.18	PTR	mail.tripletts.com
66.185.14.75	A	ns1.eliasonmanagement.com