Robtex

Up: 212.48.232.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 212.48.232.0/25
Down right: 212.48.232.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
212.48.232.130	A	mail.killnet.ru
212.48.232.186	PTR	mail.niirpi.com
212.48.232.186	PTR	mail.oborontech.com
212.48.232.186	A+PTR	mail.neptun-ckb.ru
212.48.232.194	A+PTR	gw.alts.ru
212.48.232.194	A	gw.alt-finland.com