Robtex

Up: 80.64.50.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 80.64.51.0/25
Down right: 80.64.51.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
80.64.51.21	PTR	80.64.51.21.controlcircle.com
80.64.51.33	A	cc-uk-ix-01-s-01-vrrp-20.controlcircle.com
80.64.51.34	A	cc-uk-ix-01-s-01-v-20.controlcircle.com
80.64.51.35	A	cc-uk-ix-01-s-02-v-20.controlcircle.com
80.64.51.65	A	cc-uk-gs2-01-s-01-vrrp-12.controlcircle.com
80.64.51.66	A	cc-uk-gs2-01-s-01-v-12.controlcircle.com
80.64.51.67	A+PTR	cc-uk-gs2-01-s-02-v-12.controlcircle.com
80.64.51.72	A	xap-ws-001.exec-appointments.com
80.64.51.73	A	xap-ws-002.exec-appointments.com
80.64.51.75	PTR	www.exec-appointments.com
80.64.51.81	A	cc-uk-ix-01-s-01-vrrp-28.controlcircle.com
80.64.51.82	A	cc-uk-ix-01-s-01-v-28.controlcircle.com
80.64.51.83	A	cc-uk-ix-01-s-02-v-28.controlcircle.com
80.64.51.90	A	pxautomation.com
80.64.51.94	PTR	80.64.51.94.controlcircle.com
80.64.51.104	PTR	80.64.51.104.controlcircle.com
80.64.51.109	PTR	80.64.51.109.controlcircle.com
80.64.51.124	PTR	80.64.51.124.controlcircle.com
80.64.51.124	A	looking-glass.controlcircle.com
80.64.51.129	A	cc-uk-ix-01-s-01-vrrp-18.controlcircle.com
80.64.51.130	A	cc-uk-ix-01-s-02-v-18.controlcircle.com
80.64.51.131	A	cc-uk-ix-01-s-01-v-18.controlcircle.com
80.64.51.173	PTR	80.64.51.173.controlcircle.com
80.64.51.196	PTR	80.64.51.196.controlcircle.com
80.64.51.199	PTR	80.64.51.199.controlcircle.com
80.64.51.199	A	easyoddsstage.com
80.64.51.200	PTR	clustera.autovera.com
80.64.51.200	A	easyodds.us
80.64.51.200	A	easyodds.nu
80.64.51.202	PTR	80.64.51.202.controlcircle.com
80.64.51.227	A	cc-uk-gs2-03-as-03.controlcircle.com
80.64.51.237	PTR	80.64.51.237.controlcircle.com
80.64.51.249	A	cc-uk-gs2-02-s-01-vrrp-11.controlcircle.com
80.64.51.250	A	cc-uk-gs2-02-s-01-v-11.controlcircle.com
80.64.51.251	A	cc-uk-gs2-02-s-02-v-11.controlcircle.com