Telephone numbers in Tonga

Country Code: +676
International Call Prefix: 00

yy xxx Calls inside Tonga

+676 yy xxx Calls from outside Tonga

List of area codes in Tonga

LIST OF AREA CODES
Area Code	Area
20	Nuku’alofa
21	Nuku’alofa
22	Nuku’alofa
23	Nuku’alofa
24	Nuku’alofa
25	Nuku’alofa
26	Nuku’alofa
27	Nuku’alofa
28	Nuku’alofa
29	Pea
31	Mua
32	Mua
33	Kolonga
34	Kolonga
35	Nakulo
36	Nakulo
37	Vaini
38	Vaini
41	Masilanea
42	Masilanea
43	Matangiake
44	Matangiake
50	Ena
60	Ha’apai
70	Neiafu
71	Neiafu
74	Neiafu
79	Neiafu
80	Niuafo’ou
85	Niuatoputapu

LIST OF MOBILE AREA CODES
Area Code	Area
87	Tongatapu Island Group
88	Vava’u Island Group
89	Ha’apai Island Group

Additionally, mobile phones provided by U-Call Mobile are prefixed by the two-digit code of either 15, 16, 17, 18 or 19.

References

White Pages - Tonga Telephone Directory