The story
North-West Telecom was created on the basis of the merger of Petersburg Telephone Network (Russian: Петербургская телефонная сеть) together with the following entities:
Artelekom
Murmanelektrosvyaz
Novgorodtelecom
Elektrosvyaz of Pskov Oblast
Elektrosvyaz of Vologda Oblast
Cherepovetselektrosvyaz
Electrosvyaz of Kaliningrad Oblast
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OAO Svyaz of the Republic of Komi
OAO SPB Telegraf (Russian: СПб Телеграф)
OAO Petersburg Intercity International Telephone (SPB MMT)
OAO Lensvyaz
Delta Telekom
Pskov City Telephone Network
Arkhangelsk City Telephone Network
North-West Telecom merged into Rostelecom on April 1, 2011, together with the seven other Svyazinvest regional telecommunications operators.
From Wikipedia’s article on North-West Telecom, shared under CC BY-SA 4.0.4