Sint Maarten country code +1 — call Sint Maarten & get a number.
One small island, two phone systems — and getting them straight is the whole game. The Dutch side, Sint Maarten, rides +1 on NANP area code 721; the French side answers to +590. Here's how to dial 721 from the US without 011, the TelCell and Flow prefixes, live time and weather, and how to grab a 721 virtual number with MCM.
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Sint Maarten at a glance
The numbers and facts you need before you dial.
What is the country code for Sint Maarten?
Here's the wrinkle that makes this island unusual: there's no single country code for the whole landmass. The Dutch side — Sint Maarten — has no standalone code of its own. It belongs to the North American Numbering Plan, shares +1, and is pinned to area code 721, so a full number reads +1-721-XXX-XXXX.
From the US and Canada you treat it like any domestic call: dial 1 then 721, with no 011. The French half of the very same island, Saint-Martin, sits on France's +590 entirely — a few hundred metres can change the dialling code.
Code +1 was assigned to Sint Maarten by the ITU under the E.164 plan. The “+” means “dial your local international exit code”; on a mobile, press and hold 0 to type it.
All four mean the same thing — they connect your call to Sint Maarten.
How to call Sint Maarten from anywhere
To North America, 721 behaves exactly like an area code in the next state — 1 then 721, done. From everywhere outside the NANP, you front it with your own exit code instead. Just be sure you're aiming for 721 and not the French side's +590.
Full example: +1 721 XXX XXXX — drop the local leading 0 when calling from abroad.
Sint Maarten phone number format explained
A Sint Maarten number is the familiar 10-digit NANP shape: 721 followed by a 7-digit subscriber number, with nothing but the NANP 1 in front of it for long-distance. If a number you've been given starts +590 instead, it isn't Dutch Sint Maarten at all — it's the French commune next door.
Landline
+1-721-54X-XXXX (TelEm fixed-line ranges, e.g. 721-542, 721-543, 721-545)
Mobile
+1-721-5XX-XXXX (mobile ranges such as 721-520, 721-526, 721-580)
Sint Maarten area codes — major cities
Drop the local leading 0 when calling from abroad.
| City | Region | Area code |
|---|---|---|
| Philipsburg | Sint Maarten | 721 |
| Simpson Bay | Sint Maarten | 721 |
| Cole Bay | Sint Maarten | 721 |
| Cul de Sac | Sint Maarten | 721 |
| Maho | Sint Maarten | 721 |
Sint Maarten mobile network prefixes
The prefix after +1 tells you which network issued the SIM — though number portability means it no longer guarantees the operator.
TelEm / TelCell
Flow / Chippie (formerly UTS)
Sint Maarten time zone
The island runs on Atlantic Standard Time (AST), UTC-4, the same all twelve months with no daylight-saving switch. That steadiness has a neat upside: in winter Sint Maarten is just an hour ahead of US Eastern time, and once the US springs forward the two line up exactly — so for half the year you're effectively on New York's clock.
Emergency numbers in Sint Maarten
Free to call from any Sint Maarten phone, landline or mobile.
Common mistakes when calling Sint Maarten
Almost every failed international call is a formatting issue, not a network issue.
Dialling the wrong half of the island
Dialling the wrong half of the island. Dutch Sint Maarten is +1-721; French Saint-Martin is +590. They share one island but route completely differently, so confirm which side your contact is on before anything else.
Adding 011 ahead of 1-721 from the US or Canada
it's NANP, so 011 has no place; just dial 1-721.
Dropping the 1 before 721 when you're calling from outside the local area
Dropping the 1 before 721 when you're calling from outside the local area.
Sending only the 7-digit subscriber number internationally
the 721 always has to lead.
Expecting a +1-721 call to be free like a US local number
despite the shared +1, it's usually billed at international Caribbean rates.
Tips to reduce the cost of calling Sint Maarten
Route calls over VoIP or an MCM virtual number instead of carrier international tariffs into 721.
Read the fine print on Caribbean/NANP bundles
plenty of US plans share +1 yet still bill 721 as international.
Hold a +1-721 DID so islanders reach you at local rates rather than calling overseas.
Switch on Wi-Fi calling while you're on the island to avoid roaming charges.
Why businesses get a Sint Maarten virtual number
On an island that lives on cruise traffic, hospitality and cross-border trade with the French side, a 721 number tells customers you're genuinely here on the Dutch side — not a +590 line, not a distant call centre.
更高的答覆率
a familiar 721 line gets picked up where an overseas code gets screened.
降低信任摩擦
a real SXM DID reads as local, not as a foreign caller ID.
入境更便宜
island callers reach you without per-minute international fees.
集中路由
forward those 721 calls to a team anywhere in the world.
更快的擴張
open on the Dutch side without renting premises.
真實的 PSTN 存在
an authentic 721 number, clearly distinct from the French +590 side.
Sint Maarten virtual numbers with My Country Mobile
Provision a genuine Dutch-side 721 DID — not a +590 lookalike — and route it anywhere on MCM's carrier-grade network.
Local DIDs in major area codes — provisioned in minutes
通話轉接至全球任何行動電話、固定電話、SIP 端點或軟體電話
採用 G.711、G.729、Opus 和 AMR-WB 的高清語音 — 每次通話自動協商
透過分散式 PoP 在主要語音走廊上實現低於 150 毫秒的延遲
99.99% 的正常運作時間 SLA 由異地冗餘基礎設施和低於 2 秒的故障轉移支援
WebRTC 支援基於瀏覽器的呼叫，無需安裝軟體電話
用於設定、路由和呼叫詳細記錄 (CDR) 的 REST API
透過 AI 異常檢測和 STIR/SHAKEN 內建詐欺保護
24/7 網路監控和專門支持
How to get your Sint Maarten virtual number
大多數企業在幾小時內即可上線，而不是幾天。
Choose Sint Maarten (+1-721) — the Dutch side — and pick a 721 number.
Verify your account and clear any KYC checks.
Point routing or forwarding at your team, softphones or apps.
Go live and start fielding 721 calls.
Other country dialing guides
More country codes worth bookmarking.
Get a Sint Maarten virtual number with MCM
Claim a Dutch-side +1-721 line and start your free trial today.
Sint Maarten +1 — FAQ
Sint Maarten or Saint-Martin — which code do I use?expand_more
Depends on which side. Dutch Sint Maarten is +1-721 (NANP); French Saint-Martin is +590. One island, two completely separate dialling systems.
How can I tell from a number which side of the island it's on?expand_more
If it begins +1-721 it's the Dutch side; if it begins +590 it's the French side. The code is the giveaway.
Do I need 011 to call Sint Maarten from the US?expand_more
No. Because 721 is a NANP area code, you dial 1-721 then the 7-digit number, exactly like a domestic call.
Why does my US plan charge me for a +1-721 call?expand_more
The shared +1 is misleading — 721 is treated as international Caribbean dialling by most carriers, so per-minute rates apply.
How many digits is a full Sint Maarten number?expand_more
Ten: the 721 area code plus a 7-digit subscriber number.
Does the Dutch side have more than one area code?expand_more
No — 721 covers all of Sint Maarten, from Philipsburg to Maho.
Who provides mobile service on the Dutch side?expand_more
TelEm/TelCell and Flow/Chippie (the former UTS), both operating within 721.
Does the clock change on Sint Maarten?expand_more
No. It stays on Atlantic Standard Time (UTC-4) year-round, which lines up with US Eastern time during the US summer.