939 area code
Bayamon Norte area, Atlantic Time.Area code 939 covers Bayamon Norte, Santurce, Carolina and 81 more places in Puerto Rico, on Atlantic Time. 787 covers the same area.
Right now in Carolina
Atlantic Time (AST, UTC-4, all year)
Calling hours: Every day, 8 AM to 9 PM (the federal rule)
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Where 939 numbers come from
Numbers are issued by rate center, a billing area named for its main town. 939 has 84. Each one's share is how many 939 numbers start there. Its biggest metro area is San Juan-Bayamón-Caguas, PR.
- Bayamon Norte29%
- Santurce11%
- Carolina4%
- Ponce4%
- Bayamon Sur3%
- Aguadilla3%
- Caguas3%
- Trujillo Alto2%
Also: Arecibo, Cayey, Manati, Arroyo, Rio Piedras, Naranjito, San German, Pueblo Viejo, Mayaguez, Fajardo, Levittown, Santurce Este + 64 more
Share of exchanges (blocks of 10,000 numbers). Source: NANPA rate center and exchange reports, November 10, 2026
When can you call a 939 number?
Sales calls to homes and cell phones have legal hours, set by the federal rule. Hold every 939 number to them, since you can't tell a work line from a personal cell.
What applies to 939Every day, 8 AM to 9 PM
- Federal (TCPA and FTC rule)Every day, 8 AM to 9 PMCalls to residential and mobile numbers. Most calls to businesses are exempt from the FTC's rule.47 CFR 64.1200(c)(1); 16 CFR 310.4(c) (opens in a new tab)
Local time comes from the area code, not from where the person is today. Mobiles keep their number when they move. Calling hours here are a guide, not legal advice. Every state's calling hours, with sources
939 and 787
939 went into service on September 15, 2001. 939 and 787 cover the same area, so new numbers can get either code and neighbors can have different area codes. 939 holds 32% of the area's exchanges; 787 holds the most. Local calls take all 10 digits.
- 1996787 overlay
- 2001939 starts
Source: NANPA area code database
Calling a list of 939 numbers?
Paste it into the free phone number validator. It checks every number, finds each one's time zone and sorts the list by who you can call right now.
939 area code FAQ
What area code is 939?
939 is a Puerto Rico area code for Bayamon Norte, Santurce, Carolina, Ponce and 80 more places.
What time zone is the 939 area code in?
Atlantic Time (AST, UTC-4, all year).
Is 787 the same as 939?
Same area, different code. 939 and 787 cover the same area (an overlay), so new numbers can get any of them and local calls take all 10 digits.
What are the calling hours for 939 numbers?
Every day, 8 AM to 9 PM, local time, under the federal rule.
When did the 939 area code start?
On September 15, 2001.
Calling 939 numbers? Reach more of them.
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