Robtex

Up: 82.135.148.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 82.135.149.0/25
Down right: 82.135.149.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
82.135.149.40	A+PTR	mail.absoluteagency.com
82.135.149.40	A	mx.brieffreunde.biz
82.135.149.40	A	mx.diegrossepartnersuche.com
82.135.149.86	A+PTR	mx1.dkdnet.com
82.135.149.91	A+PTR	mx3.dkdnet.com
82.135.149.190	A+PTR	mx.visaginas.lt
82.135.149.234	A+PTR	mail.dating.lt