Robtex

Up: 166.222.128.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 166.222.160.0/20
Down right: 166.222.176.0/20

IP	Type	Hostname
166.222.160.0	A+PTR	0.160.222.166.in-addr.arpa
166.222.160.138	PTR	csn-166-222-160-138.uscc.net
166.222.161.0	A+PTR	0.161.222.166.in-addr.arpa
166.222.162.0	A+PTR	0.162.222.166.in-addr.arpa
166.222.163.0	A+PTR	0.163.222.166.in-addr.arpa
166.222.164.0	A+PTR	0.164.222.166.in-addr.arpa
166.222.165.0	PTR	166.222.165.0
166.222.165.0	A	0.165.222.166.in-addr.arpa
166.222.166.0	A+PTR	0.166.222.166.in-addr.arpa
166.222.167.0	PTR	csn-166-222-167-0.uscc.net
166.222.167.0	A	0.167.222.166.in-addr.arpa
166.222.168.0	PTR	0.168.222.166.in-addr.arpa
166.222.169.0	A+PTR	0.169.222.166.in-addr.arpa
166.222.170.0	A+PTR	0.170.222.166.in-addr.arpa
166.222.170.58	PTR	58.170.222.166.in-addr.arpa
166.222.171.0	A+PTR	0.171.222.166.in-addr.arpa
166.222.172.0	A+PTR	0.172.222.166.in-addr.arpa
166.222.173.0	A+PTR	0.173.222.166.in-addr.arpa
166.222.175.0	A+PTR	0.175.222.166.in-addr.arpa
166.222.176.0	A+PTR	0.176.222.166.in-addr.arpa
166.222.177.0	A+PTR	0.177.222.166.in-addr.arpa
166.222.178.0	A+PTR	0.178.222.166.in-addr.arpa
166.222.178.118	PTR	166.222.178.118
166.222.179.0	A+PTR	0.179.222.166.in-addr.arpa
166.222.180.0	A+PTR	0.180.222.166.in-addr.arpa
166.222.181.0	A+PTR	0.181.222.166.in-addr.arpa
166.222.182.0	A+PTR	0.182.222.166.in-addr.arpa
166.222.183.0	A+PTR	0.183.222.166.in-addr.arpa
166.222.184.0	A+PTR	0.184.222.166.in-addr.arpa
166.222.185.0	A+PTR	0.185.222.166.in-addr.arpa
166.222.186.0	A+PTR	0.186.222.166.in-addr.arpa
166.222.186.154	PTR	166.222.186.154
166.222.187.0	A+PTR	0.187.222.166.in-addr.arpa
166.222.188.0	A+PTR	0.188.222.166.in-addr.arpa
166.222.189.0	A+PTR	0.189.222.166.in-addr.arpa
166.222.190.0	A+PTR	0.190.222.166.in-addr.arpa
166.222.191.0	A+PTR	0.191.222.166.in-addr.arpa