Dialing telephone calls from the Northern Mariana Islands to Sao Tome and Principe
011
▶ 239
▶ city code
▶ local number
Step-by-step
011
▼ This IDD (International Direct Dial) prefix tells the phone system in the Northern Mariana Islands that you are dialing an international number.
239
▼ Country code for Sao Tome and Principe.
city code
▼ local number
Notes
Not sure what time it is on the other end of the line? Look here for Sao Tome and Principe time, date, and time zone information.
If you are calling from a hotel or office phone system, additional steps may be required.