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+246

British Indian Ocean Territory phone numbers

380 1234

International +246 380 1234, E.164 +2463801234

The numbering plan of the British Indian Ocean Territory: formats, lengths, the regular expression for each line type and the prefix blocks allocated to each carrier, as ITU publishes it. A pattern says what a number looks like and where it was allocated; whether it is in service, and who serves it today, is a different question (below).

At a glance

Country code
+246
Exit code
00
Trunk prefix
none
Mobile digits
7
Fixed-line digits
7
Number portability
not listed
Carriers on record
1

How to dial a number in the British Indian Ocean Territory from anywhere: the dialling helper.

Line types in the plan:MobileFixed line
Mobile numbers start with:38
Mobile prefix blocks by operator
Sure Ltd
1

prefix blocks allocated, from the published records; a block is a prefix at the plan's allocation length

Check a number

Valid mobile number in the British Indian Ocean Territory.

+246
country code
380
network code
1234
subscriber number
CountryBritish Indian Ocean Territory numbering plan
Line typeMobile
Carrier the block was allocated toSure Ltd
E.164+2463801234
International+246 380 1234
National380 1234
RFC 3966tel:+246-380-1234

Source: National numbering plan: Diego Garcia (ITU)

Test a pattern

Tick the line types you accept, copy the combined pattern, and paste numbers to see which range each one falls in. Numbers are reduced to their national digits first (no spaces, no +246, no trunk prefix); nothing leaves your browser.

Line types to accept
^(?:38\d{5}|37\d{5})$
NumberNational digitsMatches
380 12343801234Mobile
370 91003709100Fixed line

Need another country, or the pattern as code in your language? Open the regex builder.

Walk the prefixes

Type the first digits of a number in national form, or tap them: the operators holding blocks under those digits, then the block a full prefix falls in. 1 blocks held by 1 operators are on record.

Type the first digits of a number in national form.

In full

Cheat sheet

Country code+246
International exit code (dialling out)00
Trunk prefix (national dialling)none
Mobile number length (national digits)7
Fixed-line number length (national digits)7
E.164 example+2463801234
RFC 3966 (tel: URI)tel:+246-380-1234
Mobile number portabilityNot listed

Line types and their regular expressions

Match each pattern against the national significant number: digits only, without the trunk prefix and without +246. The patterns follow the national numbering plan and are anchored here.

Line typeNational digitsExample, nationalExample, E.164
Mobile7380 1234+2463801234
Fixed line7370 9100+2463709100

Mobile, 7 digits

^(?:38\d{5})$

Fixed line, 7 digits

^(?:37\d{5})$

Carrier prefix blocks

The operator each prefix block was allocated to, in national form, from the published allocation records for +246.

OperatorLine typePrefix blocksRanges
Sure LtdMobile138

Questions developers ask

How many digits does a phone number in the British Indian Ocean Territory have?
Mobile numbers have 7 national digits. Fixed line numbers have 7 national digits. That is the national number, without the country code +246.
What is the country code for the British Indian Ocean Territory?
+246. From abroad, dial your own exit code, then 246, then the national number. From inside the British Indian Ocean Territory, the exit code for international calls is 00.
Which prefixes are mobile numbers in the British Indian Ocean Territory?
Mobile numbers start with 38 in national form; the mobile regular expression on this page gives the exact ranges (example: 380 1234). The carrier table shows which prefix blocks were allocated to which operator.
Can a mobile number in the British Indian Ocean Territory be ported to another carrier?
Not on record. The plan data this page is built from does not list mobile number portability for the British Indian Ocean Territory, so the carrier a prefix was allocated to is likely, not certainly, the carrier serving the number. Only a live carrier lookup (an HLR or MNP query) confirms it.