Robtex

Up: 81.30.208.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 81.30.210.0/24
Down right: 81.30.211.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.30.210.0	PTR	81.30.210.0.static.ufanet.ru
81.30.210.22	PTR	81.30.210.22.static.ufanet.ru
81.30.210.22	A	ugkb18.ru
81.30.210.22	A	www.ugkb18.ru
81.30.210.118	PTR	81.30.210.118.static.ufanet.ru
81.30.210.150	PTR	mail.gaz-servis.ru
81.30.211.3	A+PTR	81.30.211.3.static.ufanet.ru
81.30.211.14	PTR	safetrade.ru
81.30.211.17	PTR	absauto.ru
81.30.211.20	PTR	iptor.ru
81.30.211.71	A+PTR	81.30.211.71.static.ufanet.ru
81.30.211.85	PTR	81.30.211.85.static.ufanet.ru
81.30.211.85	A	www.uecoll.ru
81.30.211.85	A	uecoll.ru
81.30.211.104	A+PTR	81.30.211.104.static.ufanet.ru
81.30.211.135	A	durmstrang-games.ru
81.30.211.205	PTR	bashhost.ru
81.30.211.228	A	81.30.211.228.static.ufanet.ru
81.30.211.233	A+PTR	mail.ufimcabel.ru
81.30.211.242	A+PTR	81.30.211.242.static.ufanet.ru
81.30.211.254	A	post.bntrans.ru
81.30.211.255	A+PTR	81.30.211.255.static.ufanet.ru