Robtex

Up: 72.50.224.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 72.50.240.0/21
Down right: 72.50.248.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.50.240.76	A	r1---sn-phvo-jpqe.googlevideo.com
72.50.240.76	A	r1.sn-phvo-jpqe.googlevideo.com
72.50.240.77	A	r2---sn-phvo-jpqe.googlevideo.com
72.50.240.108	PTR	72-50-240-108.dhcp.imoncommunications.net
72.50.240.108	A	folience.com
72.50.240.130	A	onlinebackup.securitycoverage.com
72.50.240.214	A	mail.johnsongas.com
72.50.244.34	A	mail.iowanorthern.com
72.50.244.66	A	webmail.adtrack.com
72.50.244.75	A	products.adtrack.com
72.50.244.82	A	smartlead.com
72.50.244.82	A	sltext.smartleadplus.com
72.50.244.84	A	smartleadplus.com
72.50.244.100	A	www.smartlead.com
72.50.244.126	PTR	owa.adtrack.com
72.50.244.126	A	adtrack.adtrack.com
72.50.244.126	A	host70.adtrack.com
72.50.244.148	PTR	muscatinefoods.com
72.50.244.148	A	mail.muscatinefoods.com
72.50.244.166	A+PTR	mail.business-spectrum.org
72.50.244.172	A	www.fiberutilities.com
72.50.244.172	A	interconnectionexchange.com
72.50.244.172	A	fgice.com
72.50.244.196	A	policelaw.org
72.50.244.196	A	iowapolicelaw.org
72.50.244.196	A	minnesotapolicelaw.org
72.50.246.21	A	rightdirectionfinancial.com
72.50.246.21	A	merchantsfleetmanagement.com
72.50.247.31	A	oneperks.org
72.50.247.97	PTR	72-50-247-97.vzemedianetworks.com
72.50.252.118	PTR	118-252-50-72.informaticsinc.com
72.50.252.118	A	sitegensolar.com
72.50.252.151	PTR	151-252-50-72.informaticsinc.com
72.50.252.151	A	mail.issda.org
72.50.252.164	A	barracuda2.informaticsinc.com
72.50.252.164	A	barracuda1.informaticsinc.com
72.50.252.164	A	barracuda.informaticsinc.com
72.50.252.171	A+PTR	mail.beelinemail.com
72.50.252.213	PTR	mail.informaticsinc.net
72.50.252.213	A	barracuda1.informaticsinc.net
72.50.252.213	A	barracuda2.informaticsinc.net
72.50.252.220	PTR	220-252-50-72.informaticsinc.com
72.50.253.2	A+PTR	dns2.ia-informatics.com
72.50.253.3	A+PTR	dns3.ia-informatics.com
72.50.253.10	A	californialasikcenter.com
72.50.253.10	A	sgsurgery.com
72.50.253.16	PTR	016.ia-informatics.com
72.50.253.16	A	rotoloperm.com
72.50.253.16	A	centroinc.com
72.50.253.18	PTR	018.ia-informatics.com
72.50.253.32	A	smallcreek.com
72.50.253.32	A	comfortcross.com
72.50.253.33	A+PTR	terrydurin.com
72.50.253.33	A	www.terrydurin.com
72.50.253.34	PTR	tld-inc.com
72.50.253.48	PTR	048.ia-informatics.com
72.50.253.48	A	www.abpros.org
72.50.253.48	A	abpros.org
72.50.253.49	PTR	049.ia-informatics.com
72.50.253.49	A	bizrides.com
72.50.253.49	A	bizridepro.com
72.50.253.64	A	ufgsolutions.com
72.50.253.65	PTR	065.ia-informatics.com
72.50.253.65	A	hacap.org
72.50.253.65	A	hacap-geo.informaticsinc.net
72.50.253.66	PTR	066.ia-informatics.com
72.50.253.66	A	glassworkscondos.com
72.50.253.67	PTR	067.ia-informatics.com
72.50.253.72	A	www.iowalean.com
72.50.253.80	PTR	cedarrapids.org
72.50.253.80	A	priority1.com
72.50.253.80	A	www.priority1.com
72.50.253.81	PTR	081.ia-informatics.com
72.50.253.97	PTR	097.ia-informatics.com
72.50.253.97	A	accenergy-geo.informaticsinc.net
72.50.253.98	PTR	098.ia-informatics.com
72.50.253.98	A	centerforgreatapes.org
72.50.253.100	A	aspectinc.net
72.50.253.100	A	aspectinc.info
72.50.253.112	A	www.linncleanair.org
72.50.253.112	A	linncleanair.org
72.50.253.114	PTR	114-253-50-72.informaticsinc.com
72.50.253.114	A	www.abpd.org
72.50.253.114	A	abpd.org
72.50.253.128	A	crmuralsandmore.org
72.50.253.129	A+PTR	iowalean.com
72.50.253.129	A	iowaperformance.org
72.50.253.129	A	www.iowalean.com
72.50.253.144	A	midwesttherapynetwork.com
72.50.253.146	A	veggiewax.com
72.50.253.149	A	wellgatecoupon.com
72.50.253.150	A	tesselpop.com
72.50.253.160	A	wellgateprod-geo.informaticsinc.net
72.50.253.160	A	*.wellgateproducts.com
72.50.253.160	A	wellgateproducts.com
72.50.253.161	PTR	161.ia-informatics.com
72.50.253.162	PTR	162.ia-informatics.com
72.50.253.163	PTR	163.ia-informatics.com
72.50.253.176	A	escrowservicesofiowa.com
72.50.253.176	A	findobits.com
72.50.253.177	PTR	177-253-50-72.informaticsinc.com
72.50.253.177	A	issda.org
72.50.253.177	A	www.issda.org
72.50.253.192	PTR	192.ia-informatics.com
72.50.253.192	A	iarecycles-geo.informaticsinc.net
72.50.253.194	A	www.cr-opera.org
72.50.253.194	A	cr-opera.org
72.50.253.195	A	marionsolutions.com
72.50.253.209	A	lildrugstoresales.com
72.50.253.209	A	lilautostore.com
72.50.253.209	A	littlenecessities.com
72.50.253.217	A	barracuda1.informaticsinc.com
72.50.253.217	A	barracuda1.informaticsinc.net
72.50.253.224	PTR	224.ia-informatics.com
72.50.253.224	A	www.workplacelearningconnections.com
72.50.253.224	A	airchilledchicken.com
72.50.253.226	PTR	226.ia-informatics.com
72.50.253.241	PTR	241.ia-informatics.com
72.50.253.241	A	eqns1.informaticsinc.com
72.50.253.241	A	eqns1.informaticsinc.net
72.50.253.244	A	eqns1.informaticsinc.com
72.50.253.244	A	eqns1.informaticsinc.net
72.50.253.244	A	eqns3.informaticsinc.net