Robtex

Up: 66.90.160.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 66.90.164.0/23
Down right: 66.90.166.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.90.164.0	A	66-90-164-0.ip.grandenetworks.net
66.90.164.3	A	66-90-164-3.ip.grandenetworks.net
66.90.164.6	A	66-90-164-6.ip.grandenetworks.net
66.90.164.14	A	66-90-164-14.ip.grandenetworks.net
66.90.164.15	A	66-90-164-15.ip.grandenetworks.net
66.90.164.19	A	66-90-164-19.ip.grandenetworks.net
66.90.164.21	A	66-90-164-21.ip.grandenetworks.net
66.90.164.24	A	66-90-164-24.ip.grandenetworks.net
66.90.164.25	A	66-90-164-25.ip.grandenetworks.net
66.90.164.26	A	66-90-164-26.ip.grandenetworks.net
66.90.164.28	A	66-90-164-28.ip.grandenetworks.net
66.90.164.29	A	66-90-164-29.ip.grandenetworks.net
66.90.164.31	A	66-90-164-31.ip.grandenetworks.net
66.90.164.35	A	66-90-164-35.ip.grandenetworks.net
66.90.164.36	A+PTR	66-90-164-36.static.grandenetworks.net
66.90.164.37	A	66-90-164-37.ip.grandenetworks.net
66.90.164.38	A	66-90-164-38.ip.grandenetworks.net
66.90.164.41	A	66-90-164-41.ip.grandenetworks.net
66.90.164.44	A	66-90-164-44.ip.grandenetworks.net
66.90.164.45	A	66-90-164-45.ip.grandenetworks.net
66.90.164.50	A	66-90-164-50.ip.grandenetworks.net
66.90.164.53	A	66-90-164-53.ip.grandenetworks.net
66.90.164.57	A	66-90-164-57.ip.grandenetworks.net
66.90.164.61	A	mail.sstx.org
66.90.164.63	A	66-90-164-63.ip.grandenetworks.net
66.90.164.74	A	66-90-164-74.ip.grandenetworks.net
66.90.164.77	A	66-90-164-77.ip.grandenetworks.net
66.90.164.87	A	66-90-164-87.ip.grandenetworks.net
66.90.164.92	A	66-90-164-92.ip.grandenetworks.net
66.90.164.94	A	66-90-164-94.ip.grandenetworks.net
66.90.164.97	A	66-90-164-97.ip.grandenetworks.net
66.90.164.100	A	66-90-164-100.ip.grandenetworks.net
66.90.164.103	A	66-90-164-103.ip.grandenetworks.net
66.90.164.104	A	66-90-164-104.ip.grandenetworks.net
66.90.164.112	A	66-90-164-112.ip.grandenetworks.net
66.90.164.124	A	66-90-164-124.ip.grandenetworks.net
66.90.164.125	A	66-90-164-125.ip.grandenetworks.net
66.90.164.129	A	66-90-164-129.ip.grandenetworks.net
66.90.164.130	A+PTR	ns1.htu.edu
66.90.164.132	A	htu-gate.htu.edu
66.90.164.133	A+PTR	jonah.htu.edu
66.90.164.135	A+PTR	melech.htu.edu
66.90.164.138	PTR	webmail.htu.edu
66.90.164.138	A	66-90-164-138.static.grandenetworks.net
66.90.164.138	A	paul.htu.edu
66.90.164.141	A+PTR	66-90-164-141.static.grandenetworks.net
66.90.164.141	A	gomer.htu.edu
66.90.164.154	A+PTR	htthunder.htu.edu
66.90.164.199	PTR	66-90-164-199.static.grandenetworks.net
66.90.164.254	A+PTR	ns2.htu.edu
66.90.165.15	PTR	66-90-165-15.dyn.grandenetworks.net
66.90.165.35	A	66-90-165-35.dyn.grandenetworks.net
66.90.165.72	PTR	66-90-165-72.dyn.grandenetworks.net
66.90.165.110	A	familiacosta.com
66.90.165.130	A+PTR	66-90-165-130.static.grandenetworks.net
66.90.165.130	A	66-90-165-130.dyn.grandenetworks.net
66.90.165.136	A	moakcasey.com
66.90.165.213	PTR	66-90-165-213.dyn.grandenetworks.net
66.90.165.224	A	wonderland.house
66.90.166.24	A	66-90-166-24.dyn.grandenetworks.net
66.90.166.83	A+PTR	66-90-166-83.dyn.grandenetworks.net
66.90.166.96	PTR	66-90-166-96.dyn.grandenetworks.net
66.90.166.96	A	hcsc.in
66.90.166.100	A+PTR	66-90-166-100.dyn.grandenetworks.net
66.90.166.111	PTR	66-90-166-111.dyn.grandenetworks.net
66.90.166.111	A	forest.armadillo.net
66.90.166.111	A	murf.in
66.90.166.129	A	66-90-166-129.dyn.grandenetworks.net
66.90.166.141	A	eigenvalu.es
66.90.166.146	PTR	66-90-166-146.dyn.grandenetworks.net
66.90.166.150	A+PTR	66-90-166-150.dyn.grandenetworks.net
66.90.166.174	A	66-90-166-174.dyn.grandenetworks.net
66.90.166.188	A	66-90-166-188.dyn.grandenetworks.net
66.90.166.210	A	landonlane.org
66.90.166.210	A	ratlab.org
66.90.166.210	A	brianmurfin.org
66.90.167.10	A	66-90-167-10.dyn.grandenetworks.net
66.90.167.49	PTR	66-90-167-49.dyn.grandenetworks.net
66.90.167.84	A	66-90-167-84.dyn.grandenetworks.net
66.90.167.96	A	orchid8.net
66.90.167.96	A	troop0960.com
66.90.167.96	A	lonestarboy.com
66.90.167.210	PTR	66-90-167-210.dyn.grandenetworks.net
66.90.167.220	PTR	66-90-167-220.dyn.grandenetworks.net