Home phone number Caribbean Netherlands
Caribbean Netherlands Phone Number validator
How the phone number format works
- Format
- Caribbean Netherlands phone number in national or international (+599) format
- Example
- +5993181234
Things to watch for
- Accepts national or international (E.164, e.g. +599...) 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 Caribbean Netherlands phone number is 7 digits under the shared country code +599. Bonaire, Sint Eustatius, and Saba — collectively the “BES islands” — became special municipalities of the Netherlands proper in 2010 after the Netherlands Antilles dissolved, a status closer to a directly-governed part of the country than an overseas territory, and they use the euro rather than a separate Caribbean currency as a result.
How this validator works
Enter the number in national form (3181234) or full international form (+5993181234); this tool checks the 7-digit length and leading-digit pattern against the shared +599 numbering plan using Google’s libphonenumber, entirely client-side. Because Curaçao kept the same +599 code after the 2010 split, this check confirms the number is valid somewhere in that plan — it can’t independently distinguish a Bonaire-issued number from a Curaçao one without a carrier-side lookup.
What a pass doesn’t tell you
A pass confirms the digits form a real number under the shared Dutch Caribbean +599 plan — it doesn’t confirm which specific island issued it or whether the line is connected.
Scope: catches a malformed digit or wrong-length entry before a BES-islands number reaches a form — not a substitute for a real lookup service.
Content last reviewed 2026-08-09.
phone number FAQ
Is the Caribbean Netherlands the same as Curaçao or Aruba?
No. The Caribbean Netherlands refers specifically to Bonaire, Sint Eustatius, and Saba — three islands that became special municipalities directly part of the Netherlands in 2010, when the former Netherlands Antilles dissolved. Curaçao and Sint Maarten became separate self-governing countries within the Kingdom instead.
Why do these islands share a +599 code with Curaçao?
The +599 numbering plan predates the 2010 constitutional split and was never divided when the Netherlands Antilles dissolved, so Bonaire, Sint Eustatius, Saba, and Curaçao all still draw numbers from the same shared plan today.
Does a valid check confirm a Caribbean Netherlands number is currently active?
No. It only confirms the 7 digits match a real number under the shared +599 plan — not that the SIM is active, which needs a carrier-side lookup this free tool doesn't perform.