Robtex

Up: 173.30.16.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 173.30.16.0/22
Down right: 173.30.20.0/22

IP	Type	Hostname
173.30.16.51	A+PTR	173-30-16-51.client.mchsi.com
173.30.16.197	A+PTR	173-30-16-197.client.mchsi.com
173.30.16.239	PTR	173-30-16-239.client.mchsi.com
173.30.17.1	A	carlosbenevides.com
173.30.17.2	A+PTR	173-30-17-2.client.mchsi.com
173.30.17.7	A	173-30-17-7.client.mchsi.com
173.30.17.11	A	synergymtb.com
173.30.17.16	PTR	173-30-17-16.client.mchsi.com
173.30.17.17	A+PTR	173-30-17-17.client.mchsi.com
173.30.17.19	A+PTR	173-30-17-19.client.mchsi.com
173.30.17.21	A	173-30-17-21.client.mchsi.com
173.30.17.22	A	173-30-17-22.client.mchsi.com
173.30.17.24	A+PTR	173-30-17-24.client.mchsi.com
173.30.17.26	A+PTR	173-30-17-26.client.mchsi.com
173.30.17.29	A	173-30-17-29.client.mchsi.com
173.30.17.32	A+PTR	173-30-17-32.client.mchsi.com
173.30.17.34	A+PTR	173-30-17-34.client.mchsi.com
173.30.17.35	A+PTR	173-30-17-35.client.mchsi.com
173.30.17.36	A	173-30-17-36.client.mchsi.com
173.30.17.45	A	173-30-17-45.client.mchsi.com
173.30.17.46	A	173-30-17-46.client.mchsi.com
173.30.17.51	A+PTR	173-30-17-51.client.mchsi.com
173.30.17.56	A+PTR	173-30-17-56.client.mchsi.com
173.30.17.58	A+PTR	173-30-17-58.client.mchsi.com
173.30.17.59	A+PTR	173-30-17-59.client.mchsi.com
173.30.17.61	A	173-30-17-61.client.mchsi.com
173.30.17.67	A+PTR	173-30-17-67.client.mchsi.com
173.30.17.69	A	173-30-17-69.client.mchsi.com
173.30.17.71	A	173-30-17-71.client.mchsi.com
173.30.17.72	PTR	173-30-17-72.client.mchsi.com
173.30.17.74	A+PTR	173-30-17-74.client.mchsi.com
173.30.17.80	PTR	173-30-17-80.client.mchsi.com
173.30.17.82	A+PTR	173-30-17-82.client.mchsi.com
173.30.17.84	A	173-30-17-84.client.mchsi.com
173.30.17.87	A	173-30-17-87.client.mchsi.com
173.30.17.88	A+PTR	173-30-17-88.client.mchsi.com
173.30.17.89	A+PTR	173-30-17-89.client.mchsi.com
173.30.17.92	A	173-30-17-92.client.mchsi.com
173.30.17.96	A+PTR	173-30-17-96.client.mchsi.com
173.30.17.109	A	173-30-17-109.client.mchsi.com
173.30.17.114	A+PTR	173-30-17-114.client.mchsi.com
173.30.17.118	A	173-30-17-118.client.mchsi.com
173.30.17.121	A+PTR	173-30-17-121.client.mchsi.com
173.30.17.122	A+PTR	173-30-17-122.client.mchsi.com
173.30.17.125	A	173-30-17-125.client.mchsi.com
173.30.17.127	A	173-30-17-127.client.mchsi.com
173.30.17.134	A	173-30-17-134.client.mchsi.com
173.30.17.138	A+PTR	173-30-17-138.client.mchsi.com
173.30.17.148	A	173-30-17-148.client.mchsi.com
173.30.17.149	A	173-30-17-149.client.mchsi.com
173.30.17.152	A+PTR	173-30-17-152.client.mchsi.com
173.30.17.153	A+PTR	173-30-17-153.client.mchsi.com
173.30.17.157	A	173-30-17-157.client.mchsi.com
173.30.17.160	A+PTR	173-30-17-160.client.mchsi.com
173.30.17.162	A+PTR	173-30-17-162.client.mchsi.com
173.30.17.163	A+PTR	173-30-17-163.client.mchsi.com
173.30.17.164	A	173-30-17-164.client.mchsi.com
173.30.17.169	A+PTR	173-30-17-169.client.mchsi.com
173.30.17.170	A+PTR	173-30-17-170.client.mchsi.com
173.30.17.171	A	173-30-17-171.client.mchsi.com
173.30.17.173	A	173-30-17-173.client.mchsi.com
173.30.17.176	A+PTR	173-30-17-176.client.mchsi.com
173.30.17.185	A+PTR	173-30-17-185.client.mchsi.com
173.30.17.187	A+PTR	173-30-17-187.client.mchsi.com
173.30.17.190	A	173-30-17-190.client.mchsi.com
173.30.17.192	A+PTR	173-30-17-192.client.mchsi.com
173.30.17.197	A	173-30-17-197.client.mchsi.com
173.30.17.202	A+PTR	173-30-17-202.client.mchsi.com
173.30.17.206	A	173-30-17-206.client.mchsi.com
173.30.17.207	A	173-30-17-207.client.mchsi.com
173.30.17.211	A+PTR	173-30-17-211.client.mchsi.com
173.30.17.219	A+PTR	173-30-17-219.client.mchsi.com
173.30.17.223	A	173-30-17-223.client.mchsi.com
173.30.17.224	A+PTR	173-30-17-224.client.mchsi.com
173.30.17.226	A+PTR	173-30-17-226.client.mchsi.com
173.30.17.227	A+PTR	173-30-17-227.client.mchsi.com
173.30.17.228	A	viziovirus.com
173.30.17.233	A+PTR	173-30-17-233.client.mchsi.com
173.30.17.234	PTR	173-30-17-234.client.mchsi.com
173.30.17.234	A	it-tank.com
173.30.17.234	A	mail.it-tank.com
173.30.17.235	A+PTR	173-30-17-235.client.mchsi.com
173.30.17.240	A+PTR	173-30-17-240.client.mchsi.com
173.30.17.241	A	173-30-17-241.client.mchsi.com
173.30.17.242	A	173-30-17-242.client.mchsi.com
173.30.17.245	A	173-30-17-245.client.mchsi.com
173.30.17.250	A+PTR	173-30-17-250.client.mchsi.com
173.30.17.252	A	173-30-17-252.client.mchsi.com
173.30.18.71	A	173-30-18-71.client.mchsi.com
173.30.18.85	A	173-30-18-85.client.mchsi.com
173.30.18.131	A	173-30-18-131.client.mchsi.com
173.30.19.64	PTR	173-30-19-64.client.mchsi.com
173.30.19.111	A+PTR	173-30-19-111.client.mchsi.com
173.30.19.201	A+PTR	173-30-19-201.client.mchsi.com
173.30.20.217	A	lessthatmorethis.com
173.30.20.217	A	adaptbot.com
173.30.21.2	A+PTR	173-30-21-2.client.mchsi.com
173.30.21.11	A+PTR	173-30-21-11.client.mchsi.com
173.30.21.72	A+PTR	173-30-21-72.client.mchsi.com
173.30.21.199	A+PTR	173-30-21-199.client.mchsi.com
173.30.22.65	A+PTR	173-30-22-65.client.mchsi.com
173.30.22.133	A+PTR	173-30-22-133.client.mchsi.com
173.30.22.159	A+PTR	173-30-22-159.client.mchsi.com
173.30.22.159	A	imap.essentialwater.net
173.30.22.216	A+PTR	173-30-22-216.client.mchsi.com
173.30.22.220	A+PTR	173-30-22-220.client.mchsi.com
173.30.23.77	A+PTR	173-30-23-77.client.mchsi.com
173.30.23.98	A+PTR	173-30-23-98.client.mchsi.com
173.30.23.114	A+PTR	173-30-23-114.client.mchsi.com
173.30.23.177	A+PTR	173-30-23-177.client.mchsi.com