Robtex

Up: 23.252.80.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 23.252.80.0/22
Down right: 23.252.84.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
23.252.80.12	PTR	e2-gtp.roseville.zetabroadband.com
23.252.80.12	A	ns1.rw.zetabroadband.com
23.252.80.12	A	a.ns.rw.zetabroadband.com
23.252.80.13	PTR	e8-gtp.roseville.zetabroadband.com
23.252.80.13	A	ns2.rw.zetabroadband.com
23.252.80.13	A	b.ns.rw.zetabroadband.com
23.252.81.5	A+PTR	vz.zetabroadband.com
23.252.81.10	A+PTR	cdns1.zetabroadband.com
23.252.81.11	A	cdns2.zetabroadband.com
23.252.81.18	A	zimbra.zetabroadband.com
23.252.81.23	PTR	vhost1.zetabroadband.com
23.252.81.23	A	www.zetabb.com
23.252.81.23	A	mail.zetabb.com
23.252.81.25	PTR	webmin.zetabroadband.com
23.252.81.25	A	www.zetabb.com
23.252.81.25	A	zetasolutions.com
23.252.81.28	PTR	vhost1.zetabroadband.com
23.252.81.28	A	losbarrileswebcams.com
23.252.81.28	A	zetasolutions.com
23.252.81.48	A+PTR	ns1.zetabroadband.com
23.252.81.48	A	ns1.zetabb.com
23.252.81.49	A+PTR	ns2.zetabroadband.com
23.252.81.49	A	ns2.zetabb.com
23.252.81.69	A	backup1.zetabroadband.com
23.252.83.250	A	carsonevans.org
23.252.84.159	A+PTR	c-23-252-84-159.zetabroadband.com
23.252.84.159	A	norcal-it.com
23.252.85.25	PTR	c-23-252-85-25.zetabroadband.com
23.252.85.69	A+PTR	c-23-252-85-69.zetabroadband.com
23.252.86.32	A+PTR	c-23-252-86-32.zetabroadband.com
23.252.86.128	A+PTR	c-23-252-86-128.zetabroadband.com
23.252.87.52	PTR	c-23-252-87-52.zetabroadband.com
23.252.87.94	PTR	c-23-252-87-94.zetabroadband.com
23.252.87.231	A	pagebay.com
23.252.87.231	A	mail.pagebay.com
23.252.87.231	A	svvpma.com
23.252.87.237	A	netmon.zetabroadband.com
23.252.87.247	A	aesculusca.com
23.252.87.248	A	mail.y-bar-y.com