Selkirk Communications ended in 1989.
Selkirk Communications was created in 1959.
Alliance Communications ended in 1998.
Carlton Communications ended in 2004.
Rapid Communications ended in 2009.
Clearnet Communications ended in 2000.
MCI Communications ended in 1997.
Storer Communications ended in 1983.
Interscope Communications ended in 2003.
Winstar Communications ended in 2001.
BHC Communications ended in 2001.
Tenzing Communications ended in 2004.
Castle Communications ended in 2007.