Home phone number Saint Martin
Saint Martin Phone Number validator
How the phone number format works
- Format
- Saint Martin phone number in national or international (+590) format
- Example
- +590690001234
Things to watch for
- Accepts national or international (E.164, e.g. +590...) format
- Validated with Google's libphonenumber; confirms the number is possible/valid for this country, not that it is currently assigned or reachable
^[+]?[0-9 ()\-]{6,}$A Saint Martin phone number is 9 digits under the country code +590, shared with Guadeloupe and Saint Barthélemy — mobile numbers typically start with 06 or 07. French Saint Martin is a French overseas collectivity occupying the northern part of a small Caribbean island whose southern half, Dutch Sint Maarten, is a separate country entirely, split by a treaty dating back to 1648 and never fully reunified since.
How this validator works
Enter the number in national form (0690001234) or full international form (+590690001234); this tool checks the 9-digit length and leading-digit pattern against the shared French Caribbean +590 plan using Google’s libphonenumber, entirely client-side. Because the island is physically split between two country codes — +590 on the French side, +1 721 on the Dutch side — it’s easy to grab the wrong format when a contact is simply listed as “Saint Martin.”
What a pass doesn’t tell you
A pass confirms the digits form a real number under the shared +590 plan — it doesn’t confirm the SIM is active or specifically registered on the French side of the island.
Scope: catches a cross-border code mix-up before a Saint Martin number reaches a form — not a substitute for a real lookup service.
Content last reviewed 2026-08-09.
phone number FAQ
Is Saint Martin the same as Sint Maarten?
They're the two halves of one small Caribbean island split between two countries. French Saint Martin (this page) uses France's +590 numbering plan; Dutch Sint Maarten, on the same landmass, is a separate constituent country of the Kingdom of the Netherlands using the NANP +1 721 code instead.
Why does an island with two administrations share one landmass?
A 1648 treaty between French and Dutch settlers divided the roughly 87-square-kilometer island between the two powers, and the split has persisted ever since — one of very few land borders anywhere shared between two entirely different countries on an island this small.
Does a valid check confirm a Saint Martin number is currently active?
No. It only confirms the 9 digits match a real number under the shared +590 plan — not that the SIM is active, which needs a carrier-side lookup this free tool doesn't perform.