787 area code
Santurce area, Atlantic Time.Area code 787 covers Santurce, Rio Piedras, Trujillo Alto and 81 more places in Puerto Rico, on Atlantic Time. 939 covers the same area.
Right now in Trujillo Alto
Atlantic Time (AST, UTC-4, all year)
Calling hours: Every day, 8 AM to 9 PM (the federal rule)
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Where 787 numbers come from
Numbers are issued by rate center, a billing area named for its main town. 787 has 84. Each one's share is how many 787 numbers start there. Its biggest metro area is San Juan-Bayamón-Caguas, PR.
- Santurce23%
- Rio Piedras9%
- Trujillo Alto8%
- Guaynabo6%
- Bayamon Norte4%
- Caguas4%
- Ponce3%
- Pueblo Viejo2%
- Carolina2%
- Arecibo2%
Also: Mayaguez, Aguadilla, Fajardo, Humacao, Cayey, Manati, Rio Grande, Levittown, Bayamon Sur, Naranjito, San German, Santurce Este + 62 more
Share of exchanges (blocks of 10,000 numbers). Source: NANPA rate center and exchange reports, November 10, 2026
When can you call a 787 number?
Sales calls to homes and cell phones have legal hours, set by the federal rule. Hold every 787 number to them, since you can't tell a work line from a personal cell.
What applies to 787Every 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
787 and 939
787 went into service on March 1, 1996, split off from 809. 787 and 939 cover the same area, so new numbers can get either code and neighbors can have different area codes. 787 holds 68% of the area's exchanges; 939 holds the rest. Local calls take all 10 digits.
- 1996787 starts
- 2001939 overlay
Source: NANPA area code database
Calling a list of 787 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.
787 area code FAQ
What area code is 787?
787 is a Puerto Rico area code for Santurce, Rio Piedras, Trujillo Alto, Guaynabo and 80 more places.
What time zone is the 787 area code in?
Atlantic Time (AST, UTC-4, all year).
Is 939 the same as 787?
Same area, different code. 787 and 939 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 787 numbers?
Every day, 8 AM to 9 PM, local time, under the federal rule.
When did the 787 area code start?
On March 1, 1996. It was split from 809.
Calling 787 numbers? Reach more of them.
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