Country code · North America and the Caribbean
Sint Maarten country code: +1
How to write Sint Maarten phone numbers for your CRM, dialer or SMS tool, and what TrueSearch does with them.
| Country or territory | Sint Maarten |
| Calling code | +1 |
| ISO 3166 code | SX |
| Area codes | 721 |
| Region | North America and the Caribbean |
| E.164 format | +1721NXXXXXX |
+1 is shared with United States, Canada, Puerto Rico, U.S. Virgin Islands, Guam, Northern Mariana Islands, American Samoa, Bahamas, Barbados, Anguilla, Antigua and Barbuda, British Virgin Islands, Cayman Islands, Bermuda, Grenada, Turks and Caicos Islands, Jamaica, Montserrat, Saint Lucia, Dominica, Saint Vincent and the Grenadines, Dominican Republic, Trinidad and Tobago, Saint Kitts and Nevis.
Checking Sint Maarten numbers with TrueSearch
Sint Maarten is part of the North American Numbering Plan, so TrueSearch reads its numbers like US and Canadian numbers: 10 digits, or 11 starting with 1, with or without the +. Each number gets the live check for valid or dead, line type and carrier.
Note: Sint Maarten numbers look like US numbers. Area code 721 is outside the US and Canada, so calls to it can be billed as international.
Upload a CSV or Excel file. Get back every number marked valid or dead, mobile, landline or VoIP, with carrier.
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Questions
What is the country code for Sint Maarten?
+1, with area code 721. The same calling code is also used by United States, Canada, Puerto Rico, U.S. Virgin Islands, Guam, Northern Mariana Islands, American Samoa, Bahamas, Barbados, Anguilla, Antigua and Barbuda, British Virgin Islands, Cayman Islands, Bermuda, Grenada, Turks and Caicos Islands, Jamaica, Montserrat, Saint Lucia, Dominica, Saint Vincent and the Grenadines, Dominican Republic, Trinidad and Tobago, Saint Kitts and Nevis.
How do I format a Sint Maarten number in E.164?
Write + then 1, the 3-digit area code and the 7-digit number, with no spaces or dashes: +1721NXXXXXX.
Can TrueSearch check Sint Maarten numbers?
Sint Maarten is part of the North American Numbering Plan, so TrueSearch reads its numbers like US and Canadian numbers: 10 digits, or 11 starting with 1, with or without the +. Each number gets the live check for valid or dead, line type and carrier.
Is every result marked keep?
No. TrueSearch marks a number keep only when it is valid and a mobile line. Landline, VoIP, toll-free and dead numbers are flagged with the reason.
Does TrueSearch check Do Not Call lists?
No. TrueSearch does not check the US National Do Not Call Registry, state DNC lists, litigator lists or any country's do-not-call register.
More North America and the Caribbean calling codes
Free tool: convert a list of numbers to E.164
Calling codes: ITU-T E.164 country code assignments. This guide is general information, not legal advice. TrueSearch for Business checks validity, line type and carrier from licensed telecom data. It does not check the National Do Not Call Registry, state DNC lists or the FCC Reassigned Numbers Database. Not a consumer reporting agency; not for FCRA purposes.