In fact, it seems that this CDN(?) is used not on a single website, but on a whole network of city websites throughout Russia -

**.ru + ***.ru (where * is any digit)
(examples: 76.ru, 93.ru, 164.ru etc)

+

ngs.ru
ngs22.ru
ngs24.ru
ngs42.ru
ngs55.ru
ngs**.ru

+

е1.ru
fontanka.ru
ircity.ru
msk1.ru
nn.ru
sochi1.ru
ufa1.ru
v1.ru
vladivostok1.ru
voronezh1.ru