Robtex

Up: 173.30.0.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 173.30.8.0/22
Down right: 173.30.12.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
173.30.8.96	A+PTR	173-30-8-96.client.mchsi.com
173.30.8.107	A	mail2.theworldseeds.com
173.30.8.107	A	sunfinedata.com
173.30.8.107	A	home.sunfinedata.com
173.30.9.83	A+PTR	173-30-9-83.client.mchsi.com
173.30.9.83	A	trinodeits.com
173.30.9.152	A+PTR	173-30-9-152.client.mchsi.com
173.30.9.152	A	alime.info
173.30.10.6	A+PTR	173-30-10-6.client.mchsi.com
173.30.10.6	A	myc0mputer.com
173.30.10.126	A+PTR	173-30-10-126.client.mchsi.com
173.30.10.126	A	gyles19.dyndns-ip.com
173.30.10.137	A+PTR	173-30-10-137.client.mchsi.com
173.30.10.215	A	173-30-10-215.client.mchsi.com
173.30.10.253	PTR	173-30-10-253.client.mchsi.com
173.30.11.116	A+PTR	173-30-11-116.client.mchsi.com
173.30.11.116	A	kittyfoodbowl.com
173.30.11.221	A	tekippe.net
173.30.11.255	A	173-30-11-255.client.mchsi.com
173.30.12.148	A+PTR	173-30-12-148.client.mchsi.com
173.30.12.159	A+PTR	173-30-12-159.client.mchsi.com
173.30.12.159	A	cantonwine.com
173.30.12.159	A	*.cantonwine.com
173.30.13.184	A+PTR	173-30-13-184.client.mchsi.com
173.30.14.2	PTR	173-30-14-2.client.mchsi.com
173.30.14.6	A	scoutzfiction.no-ip.org
173.30.14.215	A+PTR	173-30-14-215.client.mchsi.com
173.30.14.219	A+PTR	173-30-14-219.client.mchsi.com
173.30.15.52	A+PTR	173-30-15-52.client.mchsi.com
173.30.15.52	A	drpartymagic.com
173.30.15.73	PTR	173-30-15-73.client.mchsi.com
173.30.15.91	A+PTR	173-30-15-91.client.mchsi.com