All numbers start with 9 and are split into ranges, with each range assigned to a locality and type of service:
- 920 1000 to 929 9999 - Pohnpei and Pohnpei outer island - fixed and mobile
- 930 1000 to 949 9999 - Chuuk and Chuuk outer island - fixed and mobile
- 950 1000 to 969 9999 - Yap and Yap outer island - fixed and mobile
- 970 1000 to 979 9999 - Kosrae - mobile