How to call to Sint Maarten (Netherlands) (country code +1 721)

Please note: This page describes calling information for Sint Maarten, the Dutch territory and southern side of the Caribbean island shared with Saint Martin, the French overseas collectivity and northern side of the island. Each side of the island has its own separate telephone numbering system.

Calling to Sint Maarten

  • A leading ‘1’ is included in the international call sequence.
  • A leading '+' in the phone number means 'dial your country's exit code'.
  • Calling from a mobile phone: dial from on the country where you're currently located.
  • Calling from a VoIP or satellite phone: dial from on the country where the phone is registered.

… to a mobile (cellular) phone or text (sms)

Use the same call sequence.

When calling a mobile phone user, call to the country where the mobile phone is registered, regardless of where the person being called is currently roaming.

… to a VoIP phone

Use the same call sequence.

When calling a VoIP phone user, call to the country where the VoIP phone is registered, regardless of where the person being called is currently roaming.

… to a satellite phone

Sint Maarten does not have a country-specific satellite phone system.

Most satellite phones operate on their own country code – calls to these satellite phones follow their own call sequence.

… sending a fax

Use the same call sequence.

Calling within Sint Maarten (domestic dialing)

There is no trunk prefix (1) or area code (721) used when calling within Sint Maarten.

Only the seven digit phone number is dialed.

seven digits
local phone number

Sint Maarten phone numbers explained

Number details

Sint Maarten’s phone numbers are ten digits (eleven including a leading ‘1’ that acts as a country code for the entire NANP calling region).

The first three digits are ‘721’ – an area (geographic) code to designate Sint Maarten’s phone system within the North American Numbering Plan.
The first three digits of the local phone number are an exchange within Sint Maarten’s code of ‘721’.

Mobile numbers are intermixed with land-line phone numbers.

An example of a Sint Maarten number

The Princess Juliana International Airport lists its phone number in Simpson Bay as + 721 546-7542.

Number explanation
1721546 7542
country code for Sint Maartenarea code for Sint Maarten within the NANPlocal phone number in Simpson Bay
Local example – calling from another location in Simpson Bay

Dial the seven digit phone number when calling anywhere within Sint Maarten. Do not include the trunk prefix / country code ‘1’ or the area code ‘721’ in domestic calls.

546 7542
local phone number in Simpson Bay
Long distance example – calling from Philipsburg, Sint Maarten (on the other side of the country)

Dial the seven digit phone number when calling anywhere within Sint Maarten. Do not include the trunk prefix / country code ‘1’ or the area code ‘721’ in domestic calls.

546 7542
local phone number in Simpson Bay
Saint Martin (French) example – calling from Saint Martin (the French side of the same island)

Dial Saint Martin’s international exit code of ’00’, then country code ‘1’, then Sint Maarten’s area code of ‘721’, then the local seven digit phone number.

001721546 7542
Saint Martin's exit codecountry code for the North American Numbering Planarea (geographic) code for Sint Maartenlocal phone number in Simpson Bay
International example – calling from the United States, Canada, or another country of the NANP (most of the Caribbean and U.S. territories in the Pacific)

To call within the NANP dial the phone call with the same call sequence as a U.S. or Canadian long distance call.

Dial the combined country code / trunk prefix of ‘1’, then Sint Maarten’s area code within the NANP of ‘721’, then the local seven digit phone number.

1721546 7542
long distance trunk prefixarea (geographic) code for Sint Maartenlocal phone number in Simpson Bay
International example – calling from a country outside of the NANP (the United States, Canada, most of the Caribbean, and U.S. Territories in the Pacific)

To call from a country from outside the NANP, dial the exit code of the country you’re calling from, then the NANP country code / trunk prefix of ‘1’, then Sint Maarten’s area code of ‘721’, then the local phone number.

exit code1721546 7542
exit code of the country the call is dialed fromcountry code for the North American Numbering Planarea (geographic) code for Sint Maartenlocal phone number in Simpson Bay

Calling from Sint Maarten

… to another country in the North American Numbering Plan (NANP)

NANP countries include Canada, the United States (and associated territories), and most regions of the Caribbean.

Dial the phone call starting with the trunk prefix / country code of ‘1’, then the area code and local phone number.

… to all other regions of the world

‘011’ is used as an exit code when dialing an international phone call from Sint Maarten to a location outside the NANP calling region (the United States, Canada, most regions of the Caribbean, and U.S. Territories in the Pacific).

Administrative and regulatory

Sources and more resources