global
Verizon
American Tower Company
American tower company
American Tower Company
AMT I guess
American Tower
American Tower Corp.
Crown Castle
American Tower Corp
American Tower Corp.
The areas which the cellular device company Sun Cellular services is international, Sun Cellular is one of the few phone companies which offers its services worldwide.
Pingo offers an online calling card for $1, anywhere, anytime. This includes international calling, as well as domestic.