| Region ; Label ; Comment | |
| TO ; SC ; "http://www.itu.int/oth/T02020000D3/en" | |
| TO ; SC ; "http://www.wtng.info/wtng-676-to.html" | |
| TO ; SC_EMERGENCY ; "http://www.tongaholiday.com/?page_id=2034" | |
| TO ; XML ; "http://www.itu.int/oth/T02020000D3/en" | |
| TO ; XML ; "http://www.wtng.info/wtng-676-to.html" | |
| TO ; XML_MOBILE ; "TCC mobile numbers were given a prefix of ""77"" in 2009, although this is not mentioned\nin their ITU document. Numbers with a prefix of 75, 84 and 86 have also been found." |