Robtex

Up: 66.218.0.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 66.218.8.0/22
Down right: 66.218.12.0/22

IP	Type	Hostname
66.218.8.2	A+PTR	legacy.rmsyr.org
66.218.8.4	A	mail.rmsyr.org
66.218.8.18	PTR	mail.onbar.org
66.218.9.128	A	hostedservice-66-218-9-128.usadatanet.com
66.218.9.129	A	hostedservice-66-218-9-129.usadatanet.com
66.218.9.130	A	hostedservice-66-218-9-130.usadatanet.com
66.218.9.131	A	hostedservice-66-218-9-131.usadatanet.com
66.218.9.136	PTR	mail.benchmarkmedia.com
66.218.9.136	A	mail2.benchmarkmedia.com
66.218.9.137	A+PTR	hostedservice-66-218-9-137.usadatanet.com
66.218.9.138	A	hostedservice-66-218-9-138.usadatanet.com
66.218.9.139	A	hostedservice-66-218-9-139.usadatanet.com
66.218.9.144	A	hostedservice-66-218-9-144.usadatanet.com
66.218.9.145	A	hostedservice-66-218-9-145.usadatanet.com
66.218.9.146	A	hostedservice-66-218-9-146.usadatanet.com
66.218.9.147	A	hostedservice-66-218-9-147.usadatanet.com
66.218.9.152	A	hostedservice-66-218-9-152.usadatanet.com
66.218.9.153	A	hostedservice-66-218-9-153.usadatanet.com
66.218.9.229	A	mail.wzvlaw.com
66.218.9.229	A	mail.wzlaw.org
66.218.10.3	A	syr3.clarityconnect.net
66.218.12.1	PTR	dial-66-218-12-1.usadatanet.com
66.218.13.2	PTR	dial-66-218-13-2.usadatanet.com
66.218.13.32	PTR	dial-66-218-13-32.usadatanet.com
66.218.15.72	PTR	dial-66-218-15-72.usadatanet.com