Robtex

Up: 70.37.192.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 70.37.192.0/21
Down right: 70.37.200.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
70.37.192.1	PTR	mail.nntc.net
70.37.192.1	A	dns.nntc.net
70.37.192.1	A	buttenebraska.com
70.37.192.2	PTR	smtp.nntc.net
70.37.192.16	A	newsmtp.nntc.net
70.37.192.25	A	70-37-192-25.nntc.net
70.37.192.190	A	70-37-192-190.nntc.net
70.37.193.173	A	70-37-193-173.nntc.net
70.37.196.3	A+PTR	70-37-196-3.nntc.net
70.37.196.9	A	70-37-196-9.nntc.net
70.37.196.14	A	70-37-196-14.nntc.net
70.37.196.15	A	70-37-196-15.nntc.net
70.37.196.20	A	70-37-196-20.nntc.net
70.37.196.21	A	70-37-196-21.nntc.net
70.37.196.22	A	70-37-196-22.nntc.net
70.37.196.28	A	70-37-196-28.nntc.net
70.37.196.41	A	70-37-196-41.nntc.net
70.37.196.44	A	70-37-196-44.nntc.net
70.37.196.49	A+PTR	70-37-196-49.nntc.net
70.37.196.51	A+PTR	70-37-196-51.nntc.net
70.37.196.56	A	70-37-196-56.nntc.net
70.37.196.68	A	70-37-196-68.nntc.net
70.37.196.78	A	70-37-196-78.nntc.net
70.37.196.88	A	70-37-196-88.nntc.net
70.37.196.90	A	70-37-196-90.nntc.net
70.37.196.92	A	70-37-196-92.nntc.net
70.37.196.98	A+PTR	70-37-196-98.nntc.net
70.37.196.99	A+PTR	70-37-196-99.nntc.net
70.37.196.102	A	70-37-196-102.nntc.net
70.37.196.107	A	70-37-196-107.nntc.net
70.37.196.120	A	70-37-196-120.nntc.net
70.37.196.123	A	70-37-196-123.nntc.net
70.37.196.124	A	70-37-196-124.nntc.net
70.37.196.131	A+PTR	70-37-196-131.nntc.net
70.37.196.133	A	70-37-196-133.nntc.net
70.37.196.134	A	70-37-196-134.nntc.net
70.37.196.146	A+PTR	70-37-196-146.nntc.net
70.37.196.149	A	70-37-196-149.nntc.net
70.37.196.159	A	70-37-196-159.nntc.net
70.37.196.161	A+PTR	70-37-196-161.nntc.net
70.37.196.162	A+PTR	70-37-196-162.nntc.net
70.37.196.164	A	70-37-196-164.nntc.net
70.37.196.168	A	70-37-196-168.nntc.net
70.37.196.183	A	70-37-196-183.nntc.net
70.37.196.184	A	70-37-196-184.nntc.net
70.37.196.201	A	70-37-196-201.nntc.net
70.37.196.204	A	70-37-196-204.nntc.net
70.37.196.214	A	70-37-196-214.nntc.net
70.37.196.217	A	70-37-196-217.nntc.net
70.37.196.219	A	70-37-196-219.nntc.net
70.37.196.221	A	70-37-196-221.nntc.net
70.37.196.227	A+PTR	70-37-196-227.nntc.net
70.37.196.228	A	70-37-196-228.nntc.net
70.37.196.229	A	70-37-196-229.nntc.net
70.37.196.236	A	70-37-196-236.nntc.net
70.37.196.240	A+PTR	70-37-196-240.nntc.net
70.37.196.241	A+PTR	70-37-196-241.nntc.net
70.37.196.245	A	70-37-196-245.nntc.net
70.37.196.247	A	70-37-196-247.nntc.net
70.37.197.46	A	70-37-197-46.nntc.net
70.37.197.233	A	70-37-197-233.nntc.net
70.37.198.5	A	70-37-198-5.nntc.net
70.37.198.7	A	70-37-198-7.nntc.net
70.37.198.15	A	70-37-198-15.nntc.net
70.37.198.21	A	70-37-198-21.nntc.net
70.37.198.23	A	70-37-198-23.nntc.net
70.37.198.28	A	70-37-198-28.nntc.net
70.37.198.29	A	70-37-198-29.nntc.net
70.37.198.33	A+PTR	70-37-198-33.nntc.net
70.37.198.37	A	70-37-198-37.nntc.net
70.37.198.43	A	70-37-198-43.nntc.net
70.37.198.49	A+PTR	70-37-198-49.nntc.net
70.37.198.53	A	70-37-198-53.nntc.net
70.37.198.54	A	70-37-198-54.nntc.net
70.37.198.56	A	70-37-198-56.nntc.net
70.37.198.66	A+PTR	70-37-198-66.nntc.net
70.37.198.69	A	70-37-198-69.nntc.net
70.37.198.74	A	70-37-198-74.nntc.net
70.37.198.76	A	70-37-198-76.nntc.net
70.37.198.81	A+PTR	70-37-198-81.nntc.net
70.37.198.83	A+PTR	70-37-198-83.nntc.net
70.37.198.90	A	70-37-198-90.nntc.net
70.37.198.95	A	70-37-198-95.nntc.net
70.37.198.107	A	70-37-198-107.nntc.net
70.37.198.109	A	70-37-198-109.nntc.net
70.37.198.110	A	70-37-198-110.nntc.net
70.37.198.129	A+PTR	70-37-198-129.nntc.net
70.37.198.132	A	70-37-198-132.nntc.net
70.37.198.134	A	70-37-198-134.nntc.net
70.37.198.135	A	70-37-198-135.nntc.net
70.37.198.144	A+PTR	70-37-198-144.nntc.net
70.37.198.145	A+PTR	70-37-198-145.nntc.net
70.37.198.148	A	70-37-198-148.nntc.net
70.37.198.151	A	70-37-198-151.nntc.net
70.37.198.163	A+PTR	70-37-198-163.nntc.net
70.37.198.164	A	70-37-198-164.nntc.net
70.37.198.165	A	70-37-198-165.nntc.net
70.37.198.175	A	70-37-198-175.nntc.net
70.37.198.178	A+PTR	70-37-198-178.nntc.net
70.37.198.179	A+PTR	70-37-198-179.nntc.net
70.37.198.180	A	70-37-198-180.nntc.net
70.37.198.184	A	70-37-198-184.nntc.net
70.37.198.194	A+PTR	70-37-198-194.nntc.net
70.37.198.195	A+PTR	70-37-198-195.nntc.net
70.37.198.197	A	70-37-198-197.nntc.net
70.37.198.198	A	70-37-198-198.nntc.net
70.37.198.208	A+PTR	70-37-198-208.nntc.net
70.37.198.216	A	70-37-198-216.nntc.net
70.37.198.219	A	70-37-198-219.nntc.net
70.37.198.220	A	70-37-198-220.nntc.net
70.37.198.228	A	70-37-198-228.nntc.net
70.37.198.231	A	70-37-198-231.nntc.net
70.37.198.234	A	70-37-198-234.nntc.net
70.37.198.235	A	70-37-198-235.nntc.net
70.37.198.240	A+PTR	70-37-198-240.nntc.net
70.37.198.250	A	70-37-198-250.nntc.net
70.37.198.253	A	70-37-198-253.nntc.net
70.37.199.87	A	70-37-199-87.nntc.net
70.37.200.59	A	70-37-200-59.nntc.net
70.37.201.41	A	70-37-201-41.nntc.net
70.37.201.120	A	70-37-201-120.nntc.net
70.37.202.132	A	70-37-202-132.nntc.net
70.37.202.215	A	70-37-202-215.nntc.net
70.37.202.224	A+PTR	70-37-202-224.nntc.net
70.37.202.237	A	70-37-202-237.nntc.net
70.37.203.41	A	70-37-203-41.nntc.net
70.37.203.84	A	70-37-203-84.nntc.net
70.37.203.99	A+PTR	70-37-203-99.nntc.net
70.37.203.229	A	70-37-203-229.nntc.net
70.37.204.18	A+PTR	70-37-204-18.nntc.net
70.37.204.167	A	70-37-204-167.nntc.net
70.37.205.40	A	70-37-205-40.nntc.net
70.37.205.133	A	70-37-205-133.nntc.net
70.37.205.223	A	70-37-205-223.nntc.net
70.37.206.206	A	70-37-206-206.nntc.net
70.37.207.135	A	mail.siouxlandethanol.com
70.37.207.177	A	mail.nestatebanklynch.com
70.37.207.226	A+PTR	70-37-207-226.nntc.net