Robtex

Up: 166.138.128.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 166.138.128.0/20
Down right: 166.138.144.0/20

IP	Type	Hostname
166.138.128.1	PTR	mobile-166-138-128-001.mycingular.net
166.138.128.32	PTR	mobile-166-138-128-032.mycingular.net
166.138.128.34	PTR	mobile-166-138-128-034.mycingular.net
166.138.128.64	PTR	mobile-166-138-128-064.mycingular.net
166.138.128.67	PTR	mobile-166-138-128-067.mycingular.net
166.138.128.97	PTR	mobile-166-138-128-097.mycingular.net
166.138.128.131	PTR	mobile-166-138-128-131.mycingular.net
166.138.128.160	PTR	mobile-166-138-128-160.mycingular.net
166.138.128.162	PTR	mobile-166-138-128-162.mycingular.net
166.138.128.192	PTR	mobile-166-138-128-192.mycingular.net
166.138.128.225	PTR	mobile-166-138-128-225.mycingular.net
166.138.137.0	PTR	mobile-166-138-137-000.mycingular.net
166.138.137.1	PTR	mobile-166-138-137-001.mycingular.net
166.138.137.2	PTR	mobile-166-138-137-002.mycingular.net
166.138.137.160	PTR	mobile-166-138-137-160.mycingular.net
166.138.137.163	PTR	mobile-166-138-137-163.mycingular.net
166.138.140.0	PTR	mobile-166-138-140-000.mycingular.net
166.138.140.1	PTR	mobile-166-138-140-001.mycingular.net
166.138.140.2	PTR	mobile-166-138-140-002.mycingular.net
166.138.140.3	PTR	mobile-166-138-140-003.mycingular.net
166.138.140.34	PTR	mobile-166-138-140-034.mycingular.net
166.138.140.67	PTR	mobile-166-138-140-067.mycingular.net
166.138.140.162	PTR	mobile-166-138-140-162.mycingular.net
166.138.140.224	PTR	mobile-166-138-140-224.mycingular.net
166.138.145.1	PTR	mobile-166-138-145-001.mycingular.net
166.138.145.2	PTR	mobile-166-138-145-002.mycingular.net
166.138.145.34	PTR	mobile-166-138-145-034.mycingular.net
166.138.145.64	PTR	mobile-166-138-145-064.mycingular.net
166.138.145.96	PTR	mobile-166-138-145-096.mycingular.net
166.138.145.97	PTR	mobile-166-138-145-097.mycingular.net
166.138.145.98	PTR	mobile-166-138-145-098.mycingular.net
166.138.145.163	PTR	mobile-166-138-145-163.mycingular.net
166.138.145.192	PTR	mobile-166-138-145-192.mycingular.net
166.138.145.193	PTR	mobile-166-138-145-193.mycingular.net
166.138.145.226	PTR	mobile-166-138-145-226.mycingular.net
166.138.148.2	PTR	mobile-166-138-148-002.mycingular.net
166.138.148.32	PTR	mobile-166-138-148-032.mycingular.net
166.138.148.35	PTR	mobile-166-138-148-035.mycingular.net
166.138.148.66	PTR	mobile-166-138-148-066.mycingular.net
166.138.148.129	PTR	mobile-166-138-148-129.mycingular.net
166.138.148.130	PTR	mobile-166-138-148-130.mycingular.net
166.138.148.162	PTR	mobile-166-138-148-162.mycingular.net
166.138.148.194	PTR	mobile-166-138-148-194.mycingular.net
166.138.148.195	PTR	mobile-166-138-148-195.mycingular.net
166.138.149.0	PTR	mobile-166-138-149-000.mycingular.net
166.138.153.2	PTR	mobile-166-138-153-002.mycingular.net
166.138.153.3	PTR	mobile-166-138-153-003.mycingular.net
166.138.153.32	PTR	mobile-166-138-153-032.mycingular.net
166.138.153.34	PTR	mobile-166-138-153-034.mycingular.net
166.138.153.64	PTR	mobile-166-138-153-064.mycingular.net
166.138.153.98	PTR	mobile-166-138-153-098.mycingular.net
166.138.153.99	PTR	mobile-166-138-153-099.mycingular.net
166.138.153.162	PTR	mobile-166-138-153-162.mycingular.net
166.138.153.194	PTR	mobile-166-138-153-194.mycingular.net