• From abroad: dial +1 (or your country's exit code, e.g. 00 from Europe, 011 from North America), then the national number without the leading 1. Example: +1 6492311234
  • Within Turks & Caicos Islands: dial the number as written domestically, including the trunk prefix 1. Example: 6492311234
  • Calling abroad from Turks & Caicos Islands: the international prefix is 011, or simply use + on mobiles.
  • Storing numbers in software: always store E.164 (+16492311234): unambiguous, sortable, and what SMS and telephony APIs expect.