Robtex

Up: 72.22.192.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 72.22.192.0/22
Down right: 72.22.196.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.22.192.107	PTR	72-22-192-107-co-lo-customer.vazio.com
72.22.192.107	A	pcs6.chinoc.net
72.22.192.162	A	ns1.stripling.net
72.22.192.162	A	stripling.net
72.22.192.162	A	ns.stripling.net
72.22.193.12	PTR	72-22-193-12-co-lo-customer.vazio.com
72.22.193.101	PTR	72-22-193-101-co-lo-customer.vazio.com
72.22.193.130	PTR	72-22-193-130-co-lo-customer.vazio.com
72.22.193.137	PTR	72-22-193-137-co-lo-customer.vazio.com
72.22.193.152	PTR	72-22-193-152-co-lo-customer.vazio.com
72.22.193.154	PTR	72-22-193-154-co-lo-customer.vazio.com
72.22.193.160	PTR	72-22-193-160-co-lo-customer.vazio.com
72.22.193.162	PTR	72-22-193-162-co-lo-customer.vazio.com
72.22.193.168	PTR	72-22-193-168-co-lo-customer.vazio.com
72.22.193.178	PTR	72-22-193-178-co-lo-customer.vazio.com
72.22.193.179	PTR	72-22-193-179-co-lo-customer.vazio.com
72.22.193.186	PTR	72-22-193-186-co-lo-customer.vazio.com
72.22.193.192	PTR	72-22-193-192-co-lo-customer.vazio.com
72.22.194.1	PTR	net72-194-gw-ge-900.sna.vazio.com
72.22.194.10	PTR	72-22-194-10-co-lo-customer.vazio.com
72.22.194.11	PTR	72-22-194-11-co-lo-customer.vazio.com
72.22.194.12	PTR	72-22-194-12-co-lo-customer.vazio.com
72.22.194.19	PTR	72-22-194-19-co-lo-customer.vazio.com
72.22.194.120	PTR	72-22-194-120-co-lo-customer.vazio.com
72.22.194.131	PTR	72-22-194-131-co-lo-customer.vazio.com
72.22.194.144	PTR	72-22-194-144-co-lo-customer.vazio.com
72.22.194.145	PTR	72-22-194-145-co-lo-customer.vazio.com
72.22.194.154	PTR	72-22-194-154-co-lo-customer.vazio.com
72.22.194.155	PTR	72-22-194-155-co-lo-customer.vazio.com
72.22.194.168	PTR	72-22-194-168-co-lo-customer.vazio.com
72.22.194.169	PTR	72-22-194-169-co-lo-customer.vazio.com
72.22.194.176	PTR	72-22-194-176-co-lo-customer.vazio.com
72.22.194.177	PTR	72-22-194-177-co-lo-customer.vazio.com
72.22.194.186	PTR	72-22-194-186-co-lo-customer.vazio.com
72.22.196.40	PTR	colo-cust-72-22-196-40.vazio.com
72.22.196.40	A	mx1.translucens.com
72.22.196.40	A	translucens.com
72.22.196.45	PTR	caverly.net
72.22.196.51	PTR	colo-cust-72-22-196-51.vazio.com
72.22.196.56	PTR	mail.pts1.com
72.22.196.56	A	mail.ptsdomain.com
72.22.196.56	A	mail.tacssupport.com
72.22.197.1	PTR	gige-hsa2.irvine.vazio.com
72.22.197.10	PTR	vds-72-22-197-10.customer.vazio.com
72.22.197.11	PTR	vds-72-22-197-11.customer.vazio.com
72.22.197.32	PTR	vds-72-22-197-32.customer.vazio.com
72.22.197.33	PTR	vds-72-22-197-33.customer.vazio.com
72.22.197.43	PTR	vds-72-22-197-43.customer.vazio.com
72.22.197.49	PTR	vds-72-22-197-49.customer.vazio.com
72.22.197.56	PTR	vds-72-22-197-56.customer.vazio.com
72.22.197.58	PTR	vds-72-22-197-58.customer.vazio.com
72.22.197.67	PTR	vds-72-22-197-67.customer.vazio.com
72.22.197.82	PTR	vds-72-22-197-82.customer.vazio.com
72.22.197.88	PTR	vds-72-22-197-88.customer.vazio.com
72.22.197.91	PTR	vds-72-22-197-91.customer.vazio.com
72.22.197.96	PTR	vds-72-22-197-96.customer.vazio.com
72.22.197.105	PTR	vds-72-22-197-105.customer.vazio.com
72.22.197.113	PTR	vds-72-22-197-113.customer.vazio.com
72.22.197.120	PTR	vds-72-22-197-120.customer.vazio.com
72.22.197.121	PTR	vds-72-22-197-121.customer.vazio.com
72.22.197.137	PTR	vds-72-22-197-137.customer.vazio.com
72.22.197.145	PTR	vds-72-22-197-145.customer.vazio.com
72.22.197.146	PTR	vds-72-22-197-146.customer.vazio.com
72.22.197.153	PTR	vds-72-22-197-153.customer.vazio.com
72.22.197.160	PTR	vds-72-22-197-160.customer.vazio.com
72.22.197.162	PTR	vds-72-22-197-162.customer.vazio.com
72.22.197.169	PTR	vds-72-22-197-169.customer.vazio.com
72.22.197.170	PTR	vds-72-22-197-170.customer.vazio.com
72.22.197.178	PTR	vds-72-22-197-178.customer.vazio.com
72.22.197.192	PTR	vds-72-22-197-192.customer.vazio.com
72.22.197.193	PTR	vds-72-22-197-193.customer.vazio.com
72.22.197.200	PTR	vds-72-22-197-200.customer.vazio.com
72.22.197.201	PTR	vds-72-22-197-201.customer.vazio.com
72.22.197.209	PTR	vds-72-22-197-209.customer.vazio.com
72.22.197.216	PTR	vds-72-22-197-216.customer.vazio.com
72.22.197.217	PTR	vds-72-22-197-217.customer.vazio.com
72.22.197.226	PTR	vds-72-22-197-226.customer.vazio.com
72.22.197.233	PTR	vds-72-22-197-233.customer.vazio.com
72.22.197.241	PTR	vds-72-22-197-241.customer.vazio.com
72.22.197.242	PTR	vds-72-22-197-242.customer.vazio.com
72.22.197.248	PTR	vds-72-22-197-248.customer.vazio.com
72.22.197.251	PTR	vds-72-22-197-251.customer.vazio.com
72.22.198.6	A	speedtest.mblinktx.net
72.22.198.174	A	bstep.net