The story
The company was formed in 2002 by merging a number of regional and local companies:
Altaitelecom, Barnaul,
Gorno-Altaitelecom, Gorno-Altaysk
Elektrosvayz of Irkutsk Oblast
Elektrosvyaz of Kemerovo Oblast
Elektrosvyaz of Krasnoyarsk Krai
Elektrosvyaz of Novosibirsk
Elektrosvyaz of Omsk Oblast
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Elektrosvyaz of Aga Buryatia
Tomsktelecom
Khakass subsidiary
Chitatelekom
Yeniseytelekom
Baikalwestkom
Rinet (operator of Sibnet.ru - content portal for Sibirtelecom Internet access users)
From Wikipedia’s article on Sibirtelecom, shared under CC BY-SA 4.0.3