On January 31st 2010, The Autoridade Geral de Regulacao (AGER) Sao Tome announced a change in this country's telephone numbering plan. All fixed and mobile numbers were added one digit as follows:
Fixed numbers
- Old format: 2 ?????
- New format after January 31: 22 ?????
Mobile numbers
- Old format: 9 ?????
- New formats after January 31:
- 99 ?????
- some new cell numbers will start with 98: 98 ?????