Robtex

Up: 66.218.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 66.218.16.0/21
Down right: 66.218.24.0/21

IP	Type	Hostname
66.218.16.20	A+PTR	mail.ezfaxcenter.com
66.218.16.20	A	ezfaxcenter.com
66.218.16.90	A	portal.wvtbusiness.com
66.218.16.90	A	hostedservices.usadatanet.com
66.218.16.91	A	portal-lab.wvtbusiness.com
66.218.16.99	A	pbxadmin.usadatanet.net
66.218.16.141	A	portal1.usadatanet.net
66.218.16.142	A	portal2.usadatanet.net
66.218.16.143	A	portal3.usadatanet.net
66.218.16.144	A	portal4.usadatanet.net
66.218.16.241	A	cybertool.usadatanet.net
66.218.16.248	A	director5.usadatanet.net
66.218.16.249	A	director6.usadatanet.net
66.218.16.250	PTR	www.usadatanet.com
66.218.17.2	A	dial-66-218-17-2.usadatanet.com
66.218.18.2	A+PTR	dial-66-218-18-2.usadatanet.com
66.218.19.2	A	dial-66-218-19-2.usadatanet.com