Robtex

Up: 166.188.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 166.189.0.0/17
Down right: 166.189.128.0/17

IP	Type	Hostname
166.189.0.156	A	mail.ns2.ns2.ns2.mail.518c2506e57106779f0cf55fcfd14fb065d00efe1d5a5a2a9b2d684d.6.mjuyh.com
166.189.8.2	PTR	mobile-166-189-008-002.mycingular.net
166.189.12.2	PTR	mobile-166-189-012-002.mycingular.net
166.189.14.2	PTR	mobile-166-189-014-002.mycingular.net
166.189.34.2	PTR	mobile-166-189-034-002.mycingular.net
166.189.86.3	PTR	mobile-166-189-086-003.mycingular.net
166.189.127.92	PTR	mobile-166-189-127-092.mycingular.net
166.189.142.51	PTR	mobile-166-189-142-051.mycingular.net