Robtex

Up: 200.50.16.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 200.50.16.0/25
Down right: 200.50.16.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
200.50.16.10	A+PTR	mision.centennialpr.net
200.50.16.10	PTR	mms2.centennialpr.net
200.50.16.10	A+PTR	sms.centennialpr.net
200.50.16.11	PTR	11-16-50-200-static.centennialpr.net
200.50.16.11	A	rbt.centennialpr.com
200.50.16.14	A+PTR	mm4.centennialpr.net
200.50.16.76	PTR	76-16-50-200-static.centennialpr.net