Robtex

Up: 64.139.72.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 64.139.76.0/23
Down right: 64.139.78.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.139.76.0	A+PTR	64-139-76-0-pima.hfc.comcastbusiness.net
64.139.76.38	A	tenfootexperience.com
64.139.76.44	A+PTR	64-139-76-44-pima.hfc.comcastbusiness.net
64.139.76.44	A	sitnski.com
64.139.76.44	A	aquabat.com
64.139.76.50	A+PTR	mtlearning.com
64.139.76.50	A+PTR	mail.mtlearning.com
64.139.76.50	PTR	www.mtlearning.com
64.139.76.51	A+PTR	basilnetworks.com
64.139.76.51	A	www.basilnetworks.com
64.139.76.52	A	tucsonoem.com
64.139.76.52	A	mail.tucsonoem.com
64.139.76.54	A	mail.catalinashadowsstudio.com
64.139.76.54	A	catalinashadowsstudio.com
64.139.76.93	PTR	64-139-76-93-pima.hfc.comcastbusiness.net
64.139.76.93	A	mmud.net
64.139.76.93	A	mx1.seayeno.us
64.139.76.129	PTR	64-139-76-129-pima.hfc.comcastbusiness.net
64.139.76.129	A	www.animegirlrankings.com
64.139.76.129	A	csd.varlew.net
64.139.76.169	A	compoffsol.org
64.139.76.170	A	compoffsol.info
64.139.76.171	A	compoffsol.net
64.139.76.172	PTR	64-139-76-172-pima.hfc.comcastbusiness.net
64.139.76.172	A	compoffsol.us
64.139.76.173	A	frimple6.compoffsol.com
64.139.76.173	A	mail.compoffsol.com
64.139.76.173	A	compoffsol.com
64.139.76.185	A	64-139-76-185-pima.hfc.comcastbusiness.net
64.139.76.220	PTR	mail2.veloxweb.net
64.139.76.254	A	gw.crawfordcomputer.com
64.139.77.10	A+PTR	64-139-77-10-verobeach.hfc.comcastbusiness.net
64.139.77.18	PTR	64-139-77-18-verobeach.hfc.comcastbusiness.net
64.139.77.22	PTR	64-139-77-22-verobeach.hfc.comcastbusiness.net
64.139.77.25	PTR	64-139-77-25-verobeach.hfc.comcastbusiness.net
64.139.77.26	A+PTR	64-139-77-26-verobeach.hfc.comcastbusiness.net
64.139.77.29	PTR	64-139-77-29-verobeach.hfc.comcastbusiness.net
64.139.77.30	PTR	64-139-77-30-verobeach.hfc.comcastbusiness.net
64.139.77.33	PTR	mail.mainsaildata.com
64.139.77.33	A	worldofvision.net
64.139.77.33	A	verobeachseo.com
64.139.77.34	PTR	mail2.mainsaildata.com
64.139.77.35	PTR	mail.mainsaildata.com
64.139.77.37	PTR	64-139-77-37-verobeach.hfc.comcastbusiness.net
64.139.77.37	A	ns2.dealerwarrantysites.com
64.139.77.37	A	rothbuildersverobeach.net
64.139.77.43	PTR	64-139-77-43-verobeach.hfc.comcastbusiness.net
64.139.77.57	PTR	mail.wholefamilyhealthcenter.org
64.139.77.70	PTR	64-139-77-70-verobeach.hfc.comcastbusiness.net
64.139.77.72	PTR	64-139-77-72-verobeach.hfc.comcastbusiness.net
64.139.77.73	PTR	biminicapital.com
64.139.77.77	PTR	remote.biminicapital.com
64.139.77.78	PTR	mail.biminicapital.com
64.139.77.78	PTR	remote.wakethesheeple.com
64.139.77.78	A	remote.bmncap.com
64.139.77.92	A+PTR	64-139-77-92-verobeach.hfc.comcastbusiness.net
64.139.77.96	A+PTR	64-139-77-96-verobeach.hfc.comcastbusiness.net
64.139.77.99	PTR	64-139-77-99-verobeach.hfc.comcastbusiness.net
64.139.77.117	A+PTR	64-139-77-117-verobeach.hfc.comcastbusiness.net
64.139.77.117	A	mail.mcbirch.com
64.139.77.121	PTR	64-139-77-121-verobeach.hfc.comcastbusiness.net
64.139.77.137	PTR	64-139-77-137-verobeach.hfc.comcastbusiness.net
64.139.77.137	A	mail.allstatecomputer.net
64.139.77.137	A	mail.allstatecomputers.net
64.139.77.146	A	64-139-77-146-verobeach.hfc.comcastbusiness.net
64.139.77.151	PTR	64-139-77-151-verobeach.hfc.comcastbusiness.net
64.139.77.155	PTR	64-139-77-155-verobeach.hfc.comcastbusiness.net
64.139.77.157	A+PTR	64-139-77-157-verobeach.hfc.comcastbusiness.net
64.139.77.178	PTR	64-139-77-178-verobeach.hfc.comcastbusiness.net
64.139.77.180	A+PTR	64-139-77-180-verobeach.hfc.comcastbusiness.net
64.139.77.189	A+PTR	64-139-77-189-verobeach.hfc.comcastbusiness.net
64.139.77.192	PTR	64-139-77-192-verobeach.hfc.comcastbusiness.net
64.139.77.214	PTR	64-139-77-214-verobeach.hfc.comcastbusiness.net
64.139.77.253	A	64-139-77-253-verobeach.hfc.comcastbusiness.net
64.139.78.17	PTR	64-139-78-17-huntsville.hfc.comcastbusiness.net
64.139.78.43	A	www.jeglab.com
64.139.78.133	A	florencerx.info
64.139.78.133	A	florencerx.com
64.139.78.133	A	florencerx.org
64.139.78.137	A	mail.aitinc.com
64.139.78.141	PTR	64-139-78-141-huntsville.hfc.comcastbusiness.net
64.139.78.141	A	ns2.nwcare.com
64.139.78.141	A	ns1.aitinc.com
64.139.78.145	PTR	64-139-78-145-huntsville.hfc.comcastbusiness.net
64.139.78.145	A	oralartsmurbec.com
64.139.78.145	A	oralartsmurbec.net
64.139.78.241	PTR	mail2.rcmh.org
64.139.78.241	A	ns1.rcmh.org
64.139.78.243	PTR	64-139-78-243-huntsville.hfc.comcastbusiness.net
64.139.78.243	A	mail.mynattfuneralhome.us
64.139.78.243	A	mail.mynattfh.us
64.139.79.6	A+PTR	64-139-79-6-richmond.hfc.comcastbusiness.net
64.139.79.21	PTR	64-139-79-21-richmond.hfc.comcastbusiness.net
64.139.79.35	A+PTR	64-139-79-35-richmond.hfc.comcastbusiness.net
64.139.79.83	A+PTR	64-139-79-83-richmond.hfc.comcastbusiness.net
64.139.79.89	A+PTR	64-139-79-89-richmond.hfc.comcastbusiness.net
64.139.79.96	A+PTR	64-139-79-96-richmond.hfc.comcastbusiness.net
64.139.79.98	A	wan1balance.bastionpoint.com
64.139.79.99	PTR	64-139-79-99-richmond.hfc.comcastbusiness.net
64.139.79.99	A	mail.bastionpoint.com
64.139.79.105	A	support.bastionpoint.com
64.139.79.113	PTR	glnd.k12.va.us
64.139.79.114	PTR	glnd.k12.va.us
64.139.79.115	PTR	glnd.k12.va.us
64.139.79.116	A+PTR	glnd.k12.va.us
64.139.79.117	PTR	glnd.k12.va.us
64.139.79.118	PTR	glnd.k12.va.us
64.139.79.118	A	web.glnd.k12.va.us
64.139.79.119	PTR	glnd.k12.va.us
64.139.79.120	PTR	glnd.k12.va.us
64.139.79.121	PTR	glnd.k12.va.us
64.139.79.121	A	blogs.glnd.k12.va.us
64.139.79.122	PTR	glnd.k12.va.us
64.139.79.123	PTR	glnd.k12.va.us
64.139.79.153	A+PTR	64-139-79-153-richmond.hfc.comcastbusiness.net
64.139.79.201	A+PTR	64-139-79-201-richmond.hfc.comcastbusiness.net
64.139.79.201	A	mail.dewmotorcars.com
64.139.79.243	PTR	64-139-79-243-richmond.hfc.comcastbusiness.net