Robtex

Up: 208.80.88.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 208.80.88.0/23
Down right: 208.80.90.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
208.80.89.11	A	fw-stl.prllc.net
208.80.90.21	A+PTR	ns1.nxio.net
208.80.90.22	PTR	ns2.nxio.net
208.80.90.41	A+PTR	nxio-shc1.kc.nxio.net
208.80.90.49	A	sc.nxio.net
208.80.90.61	A	ts1.healthtech-software.com
208.80.90.70	PTR	nxio-sdt1.kc.nxio.net
208.80.90.104	PTR	nxio.net
208.80.90.104	A	agrilogistics.com
208.80.90.104	A	cyberboiz.net
208.80.90.108	A	*.nspjarchitects.com
208.80.90.108	A	hruniversityonline.com
208.80.90.108	A	mail.nspjarchitects.com
208.80.90.133	PTR	simpletenant.com
208.80.90.150	A+PTR	merak.nxio.net
208.80.90.150	A	mx.nxio.net
208.80.90.150	A	mail.s4bi.com
208.80.91.255	PTR	undefined.hostname.localhost