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British Indian Ocean Territory country code +246 — call British Indian Ocean Territory & get a number.
The British Indian Ocean Territory (BIOT) country code is +246, and it's one of the most unusual dialing zones in the world. Behind +246 there's no consumer telecom market, no civilian population, no local mobile carrier — the whole code serves the Chagos Archipelago, whose only inhabited island (Diego Garcia) hosts a joint UK-US military base. We'll be direct: MCM does NOT offer public +246 virtual numbers, and neither does anyone else in the general market. Here's the honest guide.
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British Indian Ocean Territory at a glance
The numbers and facts you need before you dial.
What is the country code for British Indian Ocean Territory?
The +246 country code is the international dialing prefix assigned to the British Indian Ocean Territory (BIOT), a British Overseas Territory made up of the Chagos Archipelago in the central Indian Ocean. Unlike almost every other country code, +246 does not sit behind a general population. The Chagos islands were depopulated in the 1960s and 1970s, and today the only inhabited island is Diego Garcia, which operates as a joint UK-United States military and naval support facility.
Because of this, +246 is overwhelmingly relevant to military, government, and support communications tied to the Diego Garcia base rather than to residential or commercial phone users. If you encounter a +246 number in a directory, a caller ID, or a form field, it almost certainly relates either to base operations or — far more often — to confusion with a similar-looking North American code.
+1 246 is Barbados. +246 (no +1) is the British Indian Ocean Territory. Under the North American Numbering Plan, 246 is the area code for Barbados, reached as +1 246 XXX XXXX. A standalone +246 is the international country code itself, not an area code. Most people searching "246" online are actually looking for Barbados, not BIOT. A number written as "246" is ambiguous until you know whether a +1 sits in front of it.
All four mean the same thing — they connect your call to British Indian Ocean Territory.
How to call British Indian Ocean Territory from anywhere
To reach a number in the British Indian Ocean Territory, dial your own country's international access code, then the country code 246, then the local 7-digit subscriber number. From the US or Canada: 011 246 XXXXXXX. From the UK, Europe, and most of the world: 00 246 XXXXXXX. From any mobile: +246 XXXXXXX (the + replaces the access code). Access to these numbers is generally restricted to official and base-related communications, so successful dialing typically depends on being an authorised party rather than a general caller.
Full example: +246 no separate area code XXX XXXX — drop the local leading 0 when calling from abroad.
British Indian Ocean Territory phone number format explained
BIOT subscriber numbers under +246 use a 7-digit local format. There are no regional area codes to memorize the way you would for a large country, because the served area is limited to a single operational island community rather than a network of cities and provinces. The full international number: +246 XXX XXXX. That's the +246 country code followed by seven digits. When storing a BIOT number in a contact list, CRM, or dialing app, always keep it in full international E.164 form (+246 plus the seven digits) so it routes correctly no matter where the call originates.
Landline
Fixed-line numbers on Diego Garcia are tied to the military base's internal telecom infrastructure — there's no public switched network for civilian subscribers.
Mobile
There is no public mobile market. No local carrier sells SIMs to the general public. Any personal mobile use on Diego Garcia runs through base-controlled channels or roaming on non-BIOT networks.
British Indian Ocean Territory area codes — major cities
Drop the local leading 0 when calling from abroad.
| City | Region | Area code |
|---|---|---|
| Diego Garcia (only inhabited island) | Chagos Archipelago | no separate area code |
British Indian Ocean Territory mobile network prefixes
The prefix after +246 tells you which network issued the SIM — though number portability means it no longer guarantees the operator.
No public mobile market
BIOT has no consumer telecom market. There is no local mobile carrier selling SIMs to the general public — communications on Diego Garcia are tied to the military base.
British Indian Ocean Territory time zone
The British Indian Ocean Territory observes UTC+6, often referred to as Indian Ocean Time, and it does not use daylight saving time. That means the local offset stays constant all year, which simplifies scheduling — once you know the gap between your zone and UTC+6, it never shifts seasonally. If it's 9:00 AM in New York (UTC-4 during summer daylight time), it's already 7:00 PM the same day in the Chagos Archipelago. If it's 12:00 noon in London (UTC+1 during British Summer Time), it's 5:00 PM in BIOT. Anyone coordinating with the Diego Garcia base should build in this substantial forward offset, especially when calling from the Americas, where the territory is effectively half a day ahead.
From the US East Coast, weekday morning (7:00–10:00 AM ET) reaches Diego Garcia late afternoon / early evening (5:00–8:00 PM local). From the UK, mid-morning (9:00 AM–12:00 PM BST) reaches BIOT mid to late afternoon (2:00–5:00 PM local). Given the base-operations nature of most legitimate +246 calling, coordinate through official channels rather than assuming standard business hours.
Emergency numbers in British Indian Ocean Territory
Free to call from any British Indian Ocean Territory phone, landline or mobile.
Common mistakes when calling British Indian Ocean Territory
Almost every failed international call is a formatting issue, not a network issue.
Confusing +246 with +1 246 (Barbados)
The single biggest source of confusion. Under the North American Numbering Plan, 246 is the area code for **Barbados**, reached as +1 246 XXX XXXX. A standalone +246 (no +1) is the British Indian Ocean Territory. Most people searching "246" online are actually looking for Barbados.
Assuming a local SIM or civilian service exists
It doesn't. BIOT has no consumer or commercial telecom market. There is no local mobile carrier selling SIMs to the general public.
Expecting standard business connectivity
Toll-free numbers, business VoIP, standard virtual DIDs — none of these exist for +246. Any claim you can simply "buy a Diego Garcia number" for marketing should be treated with skepticism.
Dialing 246 without your international access code
From outside the +246 zone you still need your exit code (011 from the US, 00 from the UK/EU, or + on a mobile) before the 246 country code and 7-digit local number.
Assuming all Indian Ocean territory is BIOT
For a real Indian Ocean regional presence, target Maldives (+960), Seychelles (+248), or Mauritius (+230) — all serviceable markets with real telecom infrastructure and public numbering pools.
Tips to reduce the cost of calling British Indian Ocean Territory
If your target is a genuine Indian Ocean presence, use +960 / +248 / +230
Maldives, Seychelles, and Mauritius are the nearest real, serviceable markets. MCM can help provision numbers in any of them.
Use a global/international number for cross-region reach
If your goal is just to be reachable from anywhere, a global VoIP/SIP number reaches customers wherever they are without pretending to a local BIOT presence.
Verify current sovereignty status before publishing anything BIOT-related
The 2025 UK-Mauritius agreement is still being finalised — administrative and future numbering details may change. Verify against current UK Foreign Office / Mauritius government statements before making any claim about the territory's status.
Store +246 numbers in full E.164 format
If you do encounter a legitimate +246 number (base operations, government), store it as +246 XXX XXXX in your CRM so it routes correctly regardless of origin.
Why businesses get a British Indian Ocean Territory virtual number
We'll be direct: MCM does not offer publicly available +246 virtual numbers, and neither does anyone else in the general market.
The British Indian Ocean Territory has no consumer or commercial telecom market. Because there is no general civilian population and no public numbering pool, +246 virtual numbers, local DIDs, and SIP trunks are effectively unavailable to the public. Any claim that you can simply "buy a Diego Garcia number" for marketing or a local presence should be treated with skepticism.
If your goal is a legitimate business presence somewhere in the Indian Ocean region, we recommend targeting a nearby market that actually supports virtual numbers, or using a global/international number that reaches customers wherever they are. Good regional alternatives are listed below.
Maldives (+960) — nearest inhabited neighbour
Real telecom infrastructure, public numbering pool, and a growing tourism/services economy make +960 a serviceable Indian Ocean presence.
Seychelles (+248) — Indian Ocean island nation
Established public telecom market with virtual number availability — a credible Indian Ocean footprint if you need one.
Mauritius (+230) — the Chagos sovereignty counterpart
Given the 2025 UK-Mauritius agreement over Chagos sovereignty, Mauritius is the closest thing to a legitimate BIOT-adjacent presence with a real public telecom market.
Global / international virtual number
For pure reachability without pretending to a local Indian Ocean presence, a global VoIP number covers callers from anywhere without the false-local-presence problem.
Honest positioning beats fake local
A real Maldives, Seychelles, or Mauritius number reads as genuine; a fake Diego Garcia number reads as (or actually is) a scam. Honest matters.
Compliance-clean
Using a nearby real market avoids the sanctions and export-control complexity that surrounds anything Diego Garcia-adjacent.
British Indian Ocean Territory virtual numbers with My Country Mobile
MCM does NOT offer +246 virtual numbers — no legitimate provider does, because BIOT has no public numbering pool. For a genuine Indian Ocean regional presence, we can provision numbers in Maldives (+960), Seychelles (+248), or Mauritius (+230) with cloud-based routing to any device or team worldwide.
Local DIDs in major area codes — provisioned in minutes
Call forwarding to any mobile, landline, SIP endpoint, or softphone worldwide
HD voice with G.711, G.729, Opus & AMR-WB — auto-negotiated per call
Sub-150ms latency on major voice corridors via distributed PoPs
99.99% uptime SLA backed by geo-redundant infrastructure & sub-2s failover
WebRTC support for browser-based calling without softphone installs
REST APIs for provisioning, routing & call detail records (CDRs)
Built-in fraud protection with AI anomaly detection & STIR/SHAKEN
24/7 network monitoring and dedicated support
How to get your British Indian Ocean Territory virtual number
Most businesses are live within hours, not days.
Recognize +246 is not a viable virtual-number market — no legitimate provider offers public BIOT numbers.
Talk to our team about your actual goal — reaching customers in the Indian Ocean region, projecting a regional presence, or handling specific base-related coordination.
Pick a serviceable nearby market — Maldives (+960), Seychelles (+248), or Mauritius (+230) — or a global number if regional presence isn't the point.
Go live — MCM will provision a real, working number in your chosen market and route calls to your team wherever they sit.
Other country dialing guides
More country codes worth bookmarking.
Get a British Indian Ocean Territory virtual number with MCM
Talk to MCM about Indian Ocean regional coverage — we'll be straight with you about what's provisionable and steer you to a real, serviceable market.
British Indian Ocean Territory +246 — FAQ
What country uses the +246 country code?expand_more
+246 is the country code for the British Indian Ocean Territory (BIOT), specifically the Chagos Archipelago in the central Indian Ocean. Its only inhabited island is Diego Garcia, a joint UK-US military base.
Is +246 the same as the 246 area code in the US?expand_more
No. There is no 246 area code in the United States. Under +1, the 246 area code belongs to Barbados (+1 246). The standalone country code +246 is the British Indian Ocean Territory. They are entirely separate destinations.
How many digits is a British Indian Ocean Territory phone number?expand_more
Local numbers use a 7-digit format, dialled internationally as +246 followed by the seven digits.
Can I buy a +246 virtual number or local SIM?expand_more
Generally, no. BIOT has no public telecom market and no civilian numbering pool, so +246 virtual numbers and SIMs are not available to the general public. Any provider claiming to sell you a Diego Garcia number for marketing should be treated with skepticism. For a regional Indian Ocean presence, use Maldives (+960), Seychelles (+248), or Mauritius (+230) numbers instead.
What time zone does the British Indian Ocean Territory use?expand_more
UTC+6 (Indian Ocean Time), with no daylight saving time, so the offset is constant year-round.
Who lives in the British Indian Ocean Territory?expand_more
There is no general civilian population. The native Chagossians were forcibly removed between 1968 and 1973, and the only present community is connected to the Diego Garcia military base.
Is the British Indian Ocean Territory changing hands?expand_more
A 2025 UK-Mauritius agreement set out a transfer of sovereignty over the Chagos Archipelago to Mauritius, with the UK retaining operational control of the Diego Garcia base under a long-term lease. Implementing legislation has been moving through the UK Parliament since. The arrangement is still being finalised, so administrative and numbering details may change.
Why do so many people search for '246' online?expand_more
Almost all of that search volume is people looking for Barbados (+1 246), not the British Indian Ocean Territory. "246" is ambiguous without knowing whether a +1 sits in front of it.
How do I call a legitimate +246 number?expand_more
From the US or Canada: 011 246 XXXXXXX. From the UK or EU: 00 246 XXXXXXX. From any mobile: +246 XXXXXXX. Access to genuine BIOT numbers is generally restricted to authorised military, government, and support communications rather than a general caller.
Does MCM offer +246 numbers?expand_more
No. We'll be direct: MCM does not offer publicly available +246 virtual numbers, and neither does anyone else in the general market. For a legitimate Indian Ocean regional business presence, we recommend Maldives (+960), Seychelles (+248), or Mauritius (+230) — all real, serviceable markets.
What geography does +246 cover?expand_more
The Chagos Archipelago — a scattered group of atolls and low coral islands roughly in the middle of the Indian Ocean, south of the Maldives. The largest and only currently inhabited island is Diego Garcia.
Are there local emergency services in BIOT?expand_more
Not in the sense of a public 911/999 line for a civilian population. Diego Garcia base has its own internal emergency channels tied to military and support operations rather than a public emergency service.