Robtex

Up: 173.255.160.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 173.255.160.0/22
Down right: 173.255.164.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
173.255.160.0	PTR	0.160.255.173.unassigned.reliablehosting.com
173.255.160.10	A	vpn-in86.reliablehosting.com
173.255.160.22	PTR	22.160.255.173.unassigned.reliablehosting.com
173.255.160.148	A+PTR	148.160.255.173.client.dyn.strong-in81.as13926.net
173.255.160.234	A+PTR	234.160.255.173.client.dyn.strong-in81.as13926.net
173.255.161.0	A	0.161.255.173.client.dyn.strong-in82.as13926.net
173.255.161.84	A	84.161.255.173.client.dyn.strong-in82.as13926.net
173.255.161.189	A+PTR	189.161.255.173.client.dyn.strong-in83.as13926.net
173.255.162.0	A	0.162.255.173.client.static.strong-in88.as13926.net
173.255.162.38	A+PTR	38.162.255.173.client.static.strong-in88.as13926.net
173.255.162.173	A	daweinst.com
173.255.162.246	A+PTR	246.162.255.173.client.static.strong-in88.as13926.net
173.255.162.246	A	facethebass.com
173.255.162.246	A	dtourism.com
173.255.163.0	A+PTR	0.163.255.173.client.static.strong-in89.as13926.net
173.255.163.117	A+PTR	117.163.255.173.client.static.strong-in89.as13926.net
173.255.163.130	A	adpopunder.com
173.255.163.171	A+PTR	171.163.255.173.client.static.strong-in89.as13926.net
173.255.163.171	A	www.google.serveuser.com
173.255.163.171	A	google.serveuser.com
173.255.164.0	A+PTR	0.164.255.173.client.static.strong-in90.as13926.net
173.255.164.1	PTR	1.164.255.173.client.static.strong-in90.as13926.net
173.255.164.18	PTR	18.164.255.173.client.static.strong-in90.as13926.net
173.255.164.25	A+PTR	25.164.255.173.client.static.strong-in90.as13926.net
173.255.164.189	A	189.164.255.173.client.static.strong-in90.as13926.net
173.255.165.0	A	0.165.255.173.client.dyn.strong-in84.as13926.net
173.255.166.0	A+PTR	0.166.255.173.client.static.strong-in91.as13926.net
173.255.166.14	A	14.166.255.173.client.static.strong-in91.as13926.net
173.255.166.56	A+PTR	56.166.255.173.client.static.strong-in91.as13926.net
173.255.167.0	A	0.167.255.173.client.dyn.strong-in86.as13926.net
173.255.167.194	PTR	194.167.255.173.client.static.strong-in92.as13926.net
173.255.167.222	PTR	222.167.255.173.client.static.strong-in92.as13926.net