List of Trinidad and Tobago dialling codes

Trinidad and Tobago telephone numbers

Location of Trinidad and Tobago
Location
Country	Trinidad and Tobago
Continent	North America
Membership	NANP
Type	Closed
Typical format	+1 868 nxx xxxx
Access codes
Country calling code	+1
International call prefix	011
Trunk prefix	1
List of Trinidad and Tobago dialing codes

The area code 868 is assigned to Trinidad and Tobago, a member of the North American Numbering Plan (NANP). The telephone numbering plan for the country is known as the National Numbering Plan. It is part of a system used for assigning telephone numbers in Trinidad and Tobago, and functions as a part of the North American Numbering Plan (NANP). It is regulated by the government's Telecommunications Authority, which holds responsibility for telecommunications.

Due to a long established affiliation with NANP, phone numbers in the Republic of Trinidad and Tobago are often styled as "(868) NXX-xxxx". However, the International Telecommunications Union's standards such as E.164 and E.123 both strongly advocate the inclusion of a "+1" prefix to indicate "868" is a part of the NANP.

Area code 868 ("TNT") was created during a split from the original Area code 809 around 1 June 1997. By 31 May 1998 all calls placed to the Republic of Trinidad and Tobago required the use of the +1 868 prefix.

When calling Trinidad and Tobago from elsewhere in the North American Numbering Plan (e.g., from the United States or Canada), callers dial as if undertaking regular ten-digit dialling within those countries. Callers must simply dial 1 + 868 + seven digit phone number.

When calling to Trinidad and Tobago from outside the NANP (e.g., from the United Kingdom), callers must dial their international dialling prefix followed by 1 to access the North American Numbering Plan. For example, a call placed from the United Kingdom would be dialled as 00 + 1 + 868 + local seven digit phone number.