Mexico Area Codes (RIN)

Directory

Telephone numbers in Mexico adhere to International Telephone Union ITU-T Recommendation E.164. They are seven (7) digits throughout the country with a three (3) digit Region Identification Number - RIN (area code) except in the cities of Mexico, Guadalajara and Monterrey, where numbers are eight (8) digits with a two (2) digit RIN.

Sample area code assignment records.

Mexico Area Codes Directory Record Layout
Field	Field Description
RIN	Region Identification Number, RIN (Area Code)
GMT	North American Time Zone, UTC Offset (Standard Time) Central -6 Mountain -7 Pacific -8 Alaska -9
CITY	Primary city/areas serviced by the area code
STATECODE	State abbreviation
STATENAME	Full state name
OLDRIN	Historical region identification number