How to call Sao Tome from the USA/Canada:

dial 011 + 239 + phone number

Calling from another country?

The time in Sao Tome and Principe is now 12:18:37pm

Calling Sao Tome and Principe from the United States explained:

011 - US exit code; dial first for international calls made from the USA or Canada
239 - Country Code for Sao Tome and Principe
Phone Number - 7 digits
US to Sao Tome and Principe landlines international dialing format: 011 239 22 ?????

How to dial to Sao Tome and Principe cellular:

dialing format for calls to a cell phone: 011 239 99 ????? (or 98 ?????)

Phone Books:

Servico Informativo 103 - Sao Tome et Principe phone book, in Portuguese

Updates:

Sao Tome telephone numbering changes - January 2010