Robtex

Up: 216.193.226.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 216.193.227.0/25
Down right: 216.193.227.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.193.227.52	A	alpha41.subrigo.net
216.193.227.170	A	mail.pfesloans.com
216.193.227.170	A	webmail.pacfirst.net
216.193.227.170	A	exchange.pacfirst.net
216.193.227.178	PTR	mail.subrigo.net
216.193.227.178	A	ns2.subrigo.net
216.193.227.178	A	alpha72.subrigo.net
216.193.227.182	PTR	mail.subrigo.net
216.193.227.182	A	mail.gotwister.com
216.193.227.182	A	mail.sandiegoti.com
216.193.227.186	A	colo_summit.subrigo.net
216.193.227.194	PTR	mail2.subrigo.net
216.193.227.194	A	alpha71.subrigo.net
216.193.227.194	A	ns1.subrigo.net
216.193.227.198	PTR	mail2.subrigo.net
216.193.227.198	A	furukawaamerica.com
216.193.227.198	A	tesorointl.com
216.193.227.200	PTR	mail2.subrigo.net