Sint Maarten phone number format
How do you format a Sint Maarten phone number?
Write a Sint Maarten phone number with the country code +1. A mobile looks like (721) 520-5678 inside Sint Maarten and +1 721 520 5678 from abroad. Mobiles have 10 digits after the country code, and the E.164 form is +17215205678. A format check confirms the digits fit the numbering plan, not that the number is in service.
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Paste your Sint Maarten numbers (a mixed list is fine). They are counted here at once; the free checker then gives every number its E.164 form, country and line type, with a file to download.
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See the phone add-onSint Maarten number format at a glance
| Country calling code | +1Shared with American Samoa, Anguilla, Antigua & Barbuda, Bahamas, Barbados, Bermuda, British Virgin Islands, Canada, Cayman Islands, Dominica, Dominican Republic, Grenada, Guam, Jamaica, Montserrat, Northern Mariana Islands, Puerto Rico, St. Kitts & Nevis, St. Lucia, St. Vincent & Grenadines, Trinidad & Tobago, Turks & Caicos Islands, U.S. Virgin Islands, United States |
|---|---|
| International prefix (calling out of Sint Maarten) | 011 |
| Trunk prefix (domestic dialling) | None |
| Mobile number length | 10 digits after +1 |
| Landline number length | 10 digits after +1 |
| Mobile vs landline from the digits | Yes, separate ranges |
In short: +1, 10 digits for a mobile. The checker below formats any Sint Maarten number free in your browser; it can't say whether a line is live. Bulk phone number validator · Pro + Phone plan
Example Sint Maarten phone numbers
These are the example numbers from Google’s libphonenumber data, the same numbering-plan data our validator uses, written three ways.
| Format | Mobile | Landline |
|---|---|---|
| National (inside Sint Maarten) | (721) 520-5678 | (721) 542-5678 |
| International | +1 721 520 5678 | +1 721 542 5678 |
| E.164 | +17215205678 | +17215425678 |
How to write a Sint Maarten number in E.164
- Remove spaces, dashes, dots and brackets so only digits are left.
- Sint Maarten has no trunk prefix, so keep every digit of the national number.
- Put +1 in front. The result has 10 digits after the country code for a mobile.
So (721) 520-5678 becomes +17215205678. E.164 is the format SMS gateways, dialers and most CRMs store; see the E.164 format explained for why.
Mobile or landline?
Sint Maarten allocates separate number ranges to mobiles and landlines, so a numbering-plan check reads the line type straight from the digits, for free. That type describes the range the number came from. It doesn’t prove the number is connected today.
Mobile, landline and special number ranges in Sint Maarten
A Sint Maarten mobile number starts with 7215 after +1. Every valid number of each type below starts with one of the digit groups shown. A number that starts the right way can still be unassigned: the groups say what a range is for, not that a number is connected.
| Type | Starts with, after +1 | Digits | Example |
|---|---|---|---|
| Mobile | 7215 | 10 | +1 721 520 5678 |
| Landline (fixed line) | 7215 | 10 | +1 721 542 5678 |
| Toll-free | 8002–8009, 8332–8339, 8442–8449, 8552–8559, 8662–8669, 8772–8779, 8882–8889 | 10 | — |
| Premium rate | 9002–9009 | 10 | — |
| Personal number | 500, 521–529, 532, 533, 544, 566, 577, 588 | 10 | — |
More on Sint Maarten’s free-to-call and charged ranges: toll-free and premium numbers in Sint Maarten.
Sources, checked 5 November 2026
- Ranges, lengths and examples: Google libphonenumber numbering-plan data (libphonenumber-js 1.13.15), the data our validator uses.
- Official plan: ITU-T E.164 national numbering plan for Sint Maarten (Dutch part), which covers Sint Maarten. The regulator’s filing is the authority when the two disagree.
Validate a list of Sint Maarten numbers
Check a single number with the free phone number validator. For a whole file, upload the CSV to the verifier: every row gets a status, the E.164 number, the country and the line type, and emails in the same file get a live mailbox check. The Pro + Phone plan ($49.99 a month) adds 5,000 live carrier lookups a month for the real line type and current carrier.
Common questions
- What is the country code for Sint Maarten?
- The country calling code for Sint Maarten is +1. It is shared with 24 other countries and territories, so the number after it decides which one a number belongs to. When you call Sint Maarten from abroad, dial your international prefix (or +) followed by 1 and the number.
- How many digits is a Sint Maarten phone number?
- A Sint Maarten mobile number has 10 digits after the country code +1, the same as a landline.
- How do I write a Sint Maarten number in international format?
- Start with +1, then add the rest of the number. The mobile number (721) 520-5678 becomes +1 721 520 5678, or +17215205678 in E.164, the form most CRMs and SMS tools expect.
- Can you tell if a Sint Maarten number is a mobile?
- Usually, yes. Sint Maarten numbers come from ranges allocated separately to mobiles and landlines, so a numbering-plan check reads the line type from the digits. It tells you what the range is for, not whether the number is in service.
- Does a valid format mean a Sint Maarten number is in service?
- No. A valid format means the digits fit a range Sint Maarten's numbering plan allocates. It cannot tell whether the number is connected today or who carries it, because numbers are reassigned and ported. A live carrier lookup reports the current carrier and line type, but even that does not prove someone answers.
- Can I check a list of Sint Maarten numbers for free?
- Yes. Paste them in the list tab above or upload a CSV to the bulk phone number validator: E.164, country, format status and numbering-plan line type are free for every row, with no account. Live carrier and line-type lookups come with Pro + Phone at $49.99/mo (5,000 a month).
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