Robtex

Up: 166.198.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 166.198.0.0/17
Down right: 166.198.128.0/17

IP	Type	Hostname
166.198.3.2	PTR	mobile-166-198-003-002.mycingular.net
166.198.4.102	PTR	mobile-166-198-004-102.mycingular.net
166.198.11.2	PTR	mobile-166-198-011-002.mycingular.net
166.198.17.2	PTR	mobile-166-198-017-002.mycingular.net
166.198.18.2	PTR	mobile-166-198-018-002.mycingular.net
166.198.20.2	PTR	mobile-166-198-020-002.mycingular.net
166.198.39.255	PTR	mobile-166-198-039-255.mycingular.net
166.198.125.5	PTR	mobile-166-198-125-005.mycingular.net
166.198.161.3	PTR	mobile-166-198-161-003.mycingular.net
166.198.162.2	PTR	mobile-166-198-162-002.mycingular.net
166.198.181.158	PTR	mobile-166-198-181-158.mycingular.net
166.198.213.76	PTR	mobile-166-198-213-076.mycingular.net
166.198.238.71	PTR	mobile-166-198-238-071.mycingular.net