British Indian Ocean Territory Country Code

The country code for British Indian Ocean Territory is +246.

Calling code: +246
ISO code: IO · IOT
Region: Africa
Dialling out: 00

How to call British Indian Ocean Territory from the US

011+246+local number

011 is the US and Canadian exit code; from a mobile you can dial + instead, anywhere in the world. British Indian Ocean Territory has no trunk prefix to drop: dial the local number exactly as it is written.

Example British Indian Ocean Territory numbers in international format, as published by the numbering-plan source.
Line type	Dial from abroad
Fixed line	+246 3709100
Mobile	+246 3801234

Calling out of British Indian Ocean Territory

To call abroad from British Indian Ocean Territory, dial 00 before the destination's country code. From a mobile, + works instead.

Scope the British Indian Ocean Territory calling code and its dialing rules. Source datasets/country-codes (E.164 + ISO 3166) (ITU-T E.164 + ISO 3166, 2026-07 release) and libphonenumber PhoneNumberMetadata (Google) (libphonenumber master, 2026-08 snapshot). Updated 25 August 2026. Example numbers are the numbering plan's own published examples, not real subscriber lines.