Robtex

Up: 64.63.128.0/17
Can't show all results, try to descend to a more specific CIDR
Down left: 64.63.192.0/19
Down right: 64.63.224.0/19
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.63.192.6	PTR	mail.hawkaccess.com
64.63.192.6	A	joipbx.com
64.63.192.6	A	www.hawkcommunications.com
64.63.192.7	PTR	mail.joibiz.com
64.63.192.9	PTR	www.hawkvoip.com
64.63.192.250	A	www.joimail.com
64.63.194.7	PTR	mail.joiphone.com
64.63.194.7	A	mail.joidev.com
64.63.194.87	A	unitrxkdqq.com
64.63.196.45	A	offer.joiphone.com
64.63.196.98	A	newsletter.joiphone.com
64.63.208.1	PTR	ns1.hcwebhost.com
64.63.208.1	A	ns1.aaahawk.com
64.63.208.2	PTR	ns2.hcwebhost.com
64.63.208.2	A	ns2.aaahawk.com
64.63.208.73	A+PTR	tech.hawkaccess.com
64.63.224.211	A+PTR	prov.hawkvoip.com
64.63.224.212	A+PTR	um.hawkvoip.com
64.63.248.2	A+PTR	ns1.hawkvoip.com
64.63.248.7	A+PTR	smtp.joibiz.com
64.63.252.151	A	ccuwdtiilmllvipdjow.com
64.63.255.55	A	noanvsygpugdfnkqlkbyn.com