Robtex

Up: 68.78.64.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 68.78.64.0/21
Down right: 68.78.72.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
68.78.64.66	A+PTR	68-78-64-66.lightspeed.renonv.sbcglobal.net
68.78.64.67	A+PTR	68-78-64-67.lightspeed.renonv.sbcglobal.net
68.78.72.17	A	ns1.grace-in-action.org
68.78.72.17	A	mail.hardakers.net
68.78.72.20	A	ns1.grace-in-action.org
68.78.72.20	A	nsw.dns-sentinel.com
68.78.72.20	A	ns1.daviscert.org
68.78.73.197	A	services.cpsusa.com
68.78.76.251	A	mail.satheemagazine.com
68.78.76.251	A	theschoolofscientist.com
68.78.76.251	A	mail.theschoolofscientist.com