Robtex

Up: 37.139.84.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 37.139.86.0/24
Down right: 37.139.87.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
37.139.86.81	A+PTR	gate.vlan21.gelicon.ru
37.139.86.81	A	ns2.gelicon.ru
37.139.86.82	PTR	mx.gelicon.ru
37.139.86.82	A	selen.gelicon.ru
37.139.86.82	A	gelicon.ru
37.139.86.84	A	nas2.gelicon.ru
37.139.86.86	A	mx.gnext.ru
37.139.86.87	A+PTR	mx.gnext.ru
37.139.86.87	A	mx2.gnext.ru
37.139.86.87	A	mail.gnext.ru
37.139.86.88	A+PTR	mx2.gelicon.ru