Category:Telecommunications companies established in the 20th century

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• Telecommunications companies established in 1900‎ (3 P)
• Telecommunications companies established in 1901‎ (4 P)
• Telecommunications companies established in 1902‎ (1 P)
• Telecommunications companies established in 1903‎ (5 P)
• Telecommunications companies established in 1904‎ (4 P)
• Telecommunications companies established in 1905‎ (3 P)
• Telecommunications companies established in 1906‎ (4 P)
• Telecommunications companies established in 1907‎ (1 P)
• Telecommunications companies established in 1908‎ (1 P)
• Telecommunications companies established in 1909‎ (2 P)
• Telecommunications companies established in 1910‎ (1 P)
• Telecommunications companies established in 1911‎ (2 P)
• Telecommunications companies established in 1912‎ (4 P)
• Telecommunications companies established in 1913‎ (1 P)
• Telecommunications companies established in 1915‎ (2 P)
• Telecommunications companies established in 1917‎ (1 P)
• Telecommunications companies established in 1918‎ (1 P)
• Telecommunications companies established in 1919‎ (1 P)
• Telecommunications companies established in 1920‎ (6 P)
• Telecommunications companies established in 1921‎ (2 P)
• Telecommunications companies established in 1922‎ (1 P)
• Telecommunications companies established in 1924‎ (1 P)
• Telecommunications companies established in 1925‎ (3 P)
• Telecommunications companies established in 1926‎ (2 P)
• Telecommunications companies established in 1927‎ (1 P)
• Telecommunications companies established in 1928‎ (4 P)
• Telecommunications companies established in 1929‎ (3 P)
• Telecommunications companies established in 1930‎ (2 P)
• Telecommunications companies established in 1933‎ (1 P)
• Telecommunications companies established in 1934‎ (1 P)
• Telecommunications companies established in 1935‎ (4 P)
• Telecommunications companies established in 1936‎ (1 P)
• Telecommunications companies established in 1940‎ (2 P)
• Telecommunications companies established in 1943‎ (1 C, 1 P)
• Telecommunications companies established in 1944‎ (1 P)
• Telecommunications companies established in 1945‎ (1 P)
• Telecommunications companies established in 1946‎ (2 P)
• Telecommunications companies established in 1947‎ (6 P)
• Telecommunications companies established in 1948‎ (3 P)
• Telecommunications companies established in 1949‎ (5 P)
• Telecommunications companies established in 1950‎ (1 P)
• Telecommunications companies established in 1951‎ (5 P)
• Telecommunications companies established in 1952‎ (2 P)
• Telecommunications companies established in 1953‎ (4 P)
• Telecommunications companies established in 1954‎ (5 P)
• Telecommunications companies established in 1955‎ (5 P)
• Telecommunications companies established in 1956‎ (4 P)
• Telecommunications companies established in 1957‎ (1 P)
• Telecommunications companies established in 1960‎ (2 P)
• Telecommunications companies established in 1961‎ (3 P)
• Telecommunications companies established in 1962‎ (3 P)
• Telecommunications companies established in 1963‎ (5 P)
• Telecommunications companies established in 1964‎ (5 P)
• Telecommunications companies established in 1965‎ (3 P)
• Telecommunications companies established in 1966‎ (3 P)
• Telecommunications companies established in 1967‎ (2 P)
• Telecommunications companies established in 1968‎ (8 P)
• Telecommunications companies established in 1969‎ (10 P)
• Telecommunications companies established in 1970‎ (7 P)
• Telecommunications companies established in 1971‎ (6 P)
• Telecommunications companies established in 1972‎ (4 P)
• Telecommunications companies established in 1973‎ (1 C, 4 P)
• Telecommunications companies established in 1974‎ (4 P)
• Telecommunications companies established in 1975‎ (8 P)
• Telecommunications companies established in 1976‎ (4 P)
• Telecommunications companies established in 1977‎ (7 P)
• Telecommunications companies established in 1978‎ (3 P)
• Telecommunications companies established in 1979‎ (4 P)
• Telecommunications companies established in 1980‎ (9 P)
• Telecommunications companies established in 1981‎ (1 C, 19 P)
• Telecommunications companies established in 1982‎ (3 P)
• Telecommunications companies established in 1983‎ (2 C, 23 P)
• Telecommunications companies established in 1984‎ (16 P)
• Telecommunications companies established in 1985‎ (12 P)
• Telecommunications companies established in 1986‎ (10 P)
• Telecommunications companies established in 1987‎ (15 P)
• Telecommunications companies established in 1988‎ (1 C, 15 P)
• Telecommunications companies established in 1989‎ (15 P)
• Telecommunications companies established in 1990‎ (22 P)
• Telecommunications companies established in 1991‎ (2 C, 36 P)
• Telecommunications companies established in 1992‎ (43 P)
• Telecommunications companies established in 1993‎ (1 C, 30 P)
• Telecommunications companies established in 1994‎ (1 C, 60 P)
• Telecommunications companies established in 1995‎ (71 P)
• Telecommunications companies established in 1996‎ (60 P)
• Telecommunications companies established in 1997‎ (44 P)
• Telecommunications companies established in 1998‎ (1 C, 59 P)
• Telecommunications companies established in 1999‎ (70 P)
• Telecommunications companies established in 2000‎ (1 C, 37 P)