Area Code
Puerto Rico, United States
Local Time
10:55 AM
Atlantic Time
Area Code
939
State / Province
Puerto Rico
Country
United States
Time Zone
Atlantic Time
Area code 939 covers 75 rate centers across Puerto Rico. Rate centers are geographic areas used by telephone companies to determine local calling boundaries.
Use the E.164 format for clickable phone links (RFC 3966):
<a href="tel:+19395550100">+19395550100</a><a href="tel:+19395550199">+19395550199</a>Area code 939 is a North American Numbering Plan (NANP) telephone area code assigned to Puerto Rico, United States. It is one of 2 area codes serving Puerto Rico. As population and demand for phone numbers grew, the region was divided into multiple numbering plan areas to avoid exhausting the available 7-digit number pool.
Yes. 939 is an active North American Numbering Plan (NANP) area code, currently assigned to Puerto Rico, United States. It is safe to answer or dial calls using this area code.
Area code 939 covers 75 rate centers across Puerto Rico. Communities served include Adjuntas, Aguada, Aguadilla, Aguas Buenas, Aibonito, and 70 more localities. Rate centers are the geographic building blocks telephone carriers use to determine local calling boundaries and to assign numbers when a business or individual requests a phone number in a specific city.
All numbers in the 939 area code observe Atlantic Time (IANA timezone: America/Halifax). Atlantic Time is UTC−4 in winter (AST) and UTC−3 in summer (ADT). When placing a call to a 939 number from a different time zone, check the current local time above to avoid calling outside of business hours.
From within Puerto Rico, dial the 7-digit local number directly if calling within the same rate center, or dial 1 + 939 + 7-digit number for long-distance calls within North America. From outside the US or Canada, dial your country's international exit code followed by 1 939 XXX XXXX. The country code for both the United States and Canada in NANP is +1.
Format 939 numbers using E.164 notation as required by RFC 3966: prefix with +1 and omit dashes and parentheses (e.g., +19395550100). This format ensures tel: links work correctly on all mobile browsers and VoIP apps. See the tel: URI formatting guide for complete examples.