admin.fsb.ru has one IP number. wns.bg, vu.edu.pk, ifdom.net, veve.com.tw, paca.com.br and at least 48 other hosts point to the same IP. fsb.ru is a domain controlled by two nameservers at fsb.ru themselves. They are on different IP networks. Incoming mail for fsb.ru is handled by three mailservers also at fsb.ru. Two of them are on the same IP network. fsb.ru has one IP number.
RSNET2-AS RSNET2 RUSSIAN STATE INTERNET NETWORK Main Division of Informations Resources for States organs of the Russian Federation for Central Election Committee (CEC)
RSNET-AS RSNET Autonomous System Russian State Internet Network Main Division of informations resources for State organs of the Russian Federation Moscow