Robtex

Up: 173.27.192.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 173.27.192.0/22
Down right: 173.27.196.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
173.27.192.0	A+PTR	173-27-192-0.client.mchsi.com
173.27.192.2	A+PTR	173-27-192-2.client.mchsi.com
173.27.192.5	A	173-27-192-5.client.mchsi.com
173.27.192.15	A	173-27-192-15.client.mchsi.com
173.27.192.24	A+PTR	173-27-192-24.client.mchsi.com
173.27.192.26	A+PTR	173-27-192-26.client.mchsi.com
173.27.192.27	A+PTR	173-27-192-27.client.mchsi.com
173.27.192.31	A	173-27-192-31.client.mchsi.com
173.27.192.33	A+PTR	173-27-192-33.client.mchsi.com
173.27.192.35	A+PTR	173-27-192-35.client.mchsi.com
173.27.192.41	A+PTR	173-27-192-41.client.mchsi.com
173.27.192.43	A+PTR	173-27-192-43.client.mchsi.com
173.27.192.48	A+PTR	173-27-192-48.client.mchsi.com
173.27.192.55	A	173-27-192-55.client.mchsi.com
173.27.192.56	A+PTR	173-27-192-56.client.mchsi.com
173.27.192.71	A	173-27-192-71.client.mchsi.com
173.27.192.75	A+PTR	173-27-192-75.client.mchsi.com
173.27.192.77	A	173-27-192-77.client.mchsi.com
173.27.192.78	A	173-27-192-78.client.mchsi.com
173.27.192.83	A+PTR	173-27-192-83.client.mchsi.com
173.27.192.89	A+PTR	173-27-192-89.client.mchsi.com
173.27.192.90	A+PTR	173-27-192-90.client.mchsi.com
173.27.192.91	A+PTR	173-27-192-91.client.mchsi.com
173.27.192.109	A	173-27-192-109.client.mchsi.com
173.27.192.113	A+PTR	173-27-192-113.client.mchsi.com
173.27.192.116	A	173-27-192-116.client.mchsi.com
173.27.192.121	A+PTR	173-27-192-121.client.mchsi.com
173.27.192.124	A	173-27-192-124.client.mchsi.com
173.27.192.126	A	173-27-192-126.client.mchsi.com
173.27.192.129	A+PTR	173-27-192-129.client.mchsi.com
173.27.192.135	A	173-27-192-135.client.mchsi.com
173.27.192.137	A+PTR	173-27-192-137.client.mchsi.com
173.27.192.138	A+PTR	173-27-192-138.client.mchsi.com
173.27.192.139	A+PTR	173-27-192-139.client.mchsi.com
173.27.192.141	A	173-27-192-141.client.mchsi.com
173.27.192.149	A	173-27-192-149.client.mchsi.com
173.27.192.150	A	173-27-192-150.client.mchsi.com
173.27.192.158	A	173-27-192-158.client.mchsi.com
173.27.192.160	A+PTR	173-27-192-160.client.mchsi.com
173.27.192.162	A+PTR	173-27-192-162.client.mchsi.com
173.27.192.163	A+PTR	173-27-192-163.client.mchsi.com
173.27.192.165	A	173-27-192-165.client.mchsi.com
173.27.192.168	A+PTR	173-27-192-168.client.mchsi.com
173.27.192.169	A+PTR	173-27-192-169.client.mchsi.com
173.27.192.171	A+PTR	173-27-192-171.client.mchsi.com
173.27.192.175	A	173-27-192-175.client.mchsi.com
173.27.192.181	A	173-27-192-181.client.mchsi.com
173.27.192.183	A	173-27-192-183.client.mchsi.com
173.27.192.197	A	173-27-192-197.client.mchsi.com
173.27.192.203	A+PTR	173-27-192-203.client.mchsi.com
173.27.192.204	A	173-27-192-204.client.mchsi.com
173.27.192.207	A	173-27-192-207.client.mchsi.com
173.27.192.208	A+PTR	173-27-192-208.client.mchsi.com
173.27.192.212	A	173-27-192-212.client.mchsi.com
173.27.192.213	A	173-27-192-213.client.mchsi.com
173.27.192.220	A	173-27-192-220.client.mchsi.com
173.27.192.223	A	173-27-192-223.client.mchsi.com
173.27.192.224	A+PTR	173-27-192-224.client.mchsi.com
173.27.192.227	A+PTR	173-27-192-227.client.mchsi.com
173.27.192.236	A	173-27-192-236.client.mchsi.com
173.27.192.242	A+PTR	173-27-192-242.client.mchsi.com
173.27.192.251	A+PTR	173-27-192-251.client.mchsi.com
173.27.192.252	A	173-27-192-252.client.mchsi.com
173.27.193.26	A+PTR	173-27-193-26.client.mchsi.com
173.27.193.204	A	webmail.barrettnetwork.com
173.27.193.223	A	173-27-193-223.client.mchsi.com
173.27.194.129	A+PTR	173-27-194-129.client.mchsi.com
173.27.194.129	A	www.byrnesonline.com
173.27.194.129	A	byrnesonline.com
173.27.195.157	A	craphost.com
173.27.195.190	A	173-27-195-190.client.mchsi.com
173.27.197.36	A+PTR	173-27-197-36.client.mchsi.com
173.27.197.36	A	rondemarse.com
173.27.197.36	A	nimbleadvantage.com
173.27.197.134	A+PTR	173-27-197-134.client.mchsi.com
173.27.199.156	A	173-27-199-156.client.mchsi.com