Robtex

Up: 109.195.80.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 109.195.81.0/25
Down right: 109.195.81.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
109.195.81.1	A	rs4.spb.ertelecom.ru
109.195.81.153	A	email1.dnd-titan.ru
109.195.81.153	A	email1.titantravel.ru
109.195.81.153	A	email1.titan-security.ru
109.195.81.187	PTR	109x195x81x187.static-business.spb.ertelecom.ru
109.195.81.193	PTR	net.xxx-extream
109.195.81.193	PTR	ru.drumscream
109.195.81.193	A	xxx-extream.net
109.195.81.217	PTR	109x195x81x217.static-business.spb.ertelecom.ru