Robtex

Up: 192.139.80.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 192.139.80.0/25
Down right: 192.139.80.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
192.139.80.4	A	fw.comspec.com
192.139.80.5	A	fb.comspec.com
192.139.80.7	A+PTR	sw07.comspec.com
192.139.80.8	A	test.comspec.com
192.139.80.9	A+PTR	test1.comspec.com
192.139.80.14	A+PTR	ml2.comspec.com
192.139.80.15	A+PTR	mx1.comspec.net
192.139.80.15	A	mail.comspec.net
192.139.80.17	A	ws03.comspec.com
192.139.80.18	A+PTR	ns2.comspec.com
192.139.80.18	A+PTR	ntp.comspec.com
192.139.80.19	A+PTR	ns.comspec.com
192.139.80.19	A+PTR	ntp.comspec.com
192.139.80.20	A	comspec.com
192.139.80.20	A	www.comspec.com
192.139.80.22	A	mail1.comspec.net
192.139.80.22	A	sandbox.ht.indexexchange.com
192.139.80.23	A+PTR	mail2.comspec.net
192.139.80.28	A+PTR	mlc.comspec.com
192.139.80.28	A	ssp-sandbox.casalemedia.com
192.139.80.44	A	www.headertag.com
192.139.80.44	A	casalemedia.com
192.139.80.44	A	indexexchange.com
192.139.80.51	A+PTR	tolx051.comspec.com
192.139.80.51	A	mediaclay.com
192.139.80.52	A	clients.comspec.com
192.139.80.64	A	n1t1064.comspec.com
192.139.80.65	A	n1t1065.comspec.com
192.139.80.66	A	n1t1066.comspec.com
192.139.80.67	A	n1t1067.comspec.com
192.139.80.68	A	n1t1068.comspec.com
192.139.80.69	A	n1t1069.comspec.com
192.139.80.70	A	n1t1070.comspec.com
192.139.80.71	A	n1t1071.comspec.com
192.139.80.72	A	n1t1072.comspec.com
192.139.80.73	A+PTR	n1t1073.comspec.com
192.139.80.74	A	n1t1074.comspec.com
192.139.80.75	A	n1t1075.comspec.com
192.139.80.76	A+PTR	n1t1076.comspec.com
192.139.80.77	A	n1t1077.comspec.com
192.139.80.78	A	n1t1078.comspec.com
192.139.80.79	A	n1t1079.comspec.com
192.139.80.80	A	n1t1080.comspec.com
192.139.80.81	A	n1t1081.comspec.com
192.139.80.82	A	n1t1082.comspec.com
192.139.80.83	A+PTR	n1t1083.comspec.com
192.139.80.84	A	n1t1084.comspec.com
192.139.80.85	A	n1t1085.comspec.com
192.139.80.86	A	n1t1086.comspec.com
192.139.80.87	A	n1t1087.comspec.com
192.139.80.88	A	n1t1088.comspec.com
192.139.80.89	A	n1t1089.comspec.com
192.139.80.90	A	n1t1090.comspec.com
192.139.80.91	A	n1t1091.comspec.com
192.139.80.92	A	n1t1092.comspec.com
192.139.80.93	A	n1t1093.comspec.com
192.139.80.94	A	n1t1094.comspec.com
192.139.80.95	A+PTR	n1t1095.comspec.com
192.139.80.96	A	n1t1096.comspec.com
192.139.80.97	A	n1t1097.comspec.com
192.139.80.98	A	n1t1098.comspec.com
192.139.80.99	A	n1t1099.comspec.com
192.139.80.100	A	n1t1100.comspec.com
192.139.80.101	A	n1t1101.comspec.com
192.139.80.102	A	n1t1102.comspec.com
192.139.80.103	A	n1t1103.comspec.com
192.139.80.104	A+PTR	n1t1104.comspec.com
192.139.80.105	A	n1t1105.comspec.com
192.139.80.106	A	n1t1106.comspec.com
192.139.80.107	A	n1t1107.comspec.com
192.139.80.108	A	n1t1108.comspec.com
192.139.80.109	A	n1t1109.comspec.com
192.139.80.110	A	n1t1110.comspec.com
192.139.80.111	A	n1t1111.comspec.com
192.139.80.112	A	n1t1112.comspec.com
192.139.80.113	A	n1t1113.comspec.com
192.139.80.114	A	n1t1114.comspec.com
192.139.80.115	A	n1t1115.comspec.com
192.139.80.116	A	n1t1116.comspec.com
192.139.80.117	A	n1t1117.comspec.com
192.139.80.118	A	n1t1118.comspec.com
192.139.80.119	A	n1t1119.comspec.com
192.139.80.120	A	n1t1120.comspec.com
192.139.80.121	A	n1t1121.comspec.com
192.139.80.122	A	n1t1122.comspec.com
192.139.80.123	A	n1t1123.comspec.com
192.139.80.124	A	n1t1124.comspec.com
192.139.80.125	A	n1t1125.comspec.com
192.139.80.126	A	n1t1126.comspec.com
192.139.80.127	A	n1t1127.comspec.com
192.139.80.145	A+PTR	scientificsurplus.com
192.139.80.149	A+PTR	absolutesurplus.com
192.139.80.150	A+PTR	surpluscanada.com
192.139.80.171	PTR	prontoair.com
192.139.80.206	A+PTR	mx1.casalemedia.com
192.139.80.206	A	mx1.comspec.com
192.139.80.210	A+PTR	out.casalemedia.com
192.139.80.217	A+PTR	tolx217.comspec.com
192.139.80.217	A	lovetocook.com
192.139.80.220	A	r220.comspec.com
192.139.80.221	A	r221.comspec.com
192.139.80.222	A	r222.comspec.com
192.139.80.223	A	r223.comspec.com
192.139.80.224	A+PTR	r224.comspec.com
192.139.80.225	A	r225.comspec.com
192.139.80.226	A	r226.comspec.com
192.139.80.227	A	r227.comspec.com
192.139.80.228	A	r228.comspec.com
192.139.80.229	A	r229.comspec.com
192.139.80.231	A+PTR	infodex.org
192.139.80.254	A	gate.comspec.com