Information Telegraph Agency of Russia was created in 1902.

It was the Torgovo-Telegrafnoye Agentstvo (Russian for "Commercial-Telegraphic Agency), established in 1902 in Saint Petersburg, then the capital of Russia. It was turned into the Saint Petersburg Telegraphic Agency in 1904 (renamed Petrograd Telegraphic Agency when the city itself changed its name in 1914), then the Russian Telegraphic Agency (ROSTA) in 1918, the Telegraphic Agency of the Soviet Union (TASS) in 1925, and finally Information Telegraph Agency of Russia (ITAR-TASS) in 1994. But, essencially, it's the same agency founded in 1902.

Belarusian Telegraph Agency was created in 1918.

Russian Telegraph Agency was created in 1925.

Telegraph Agency of the Soviet Union was created in 1925.