939 Area Code: Where It’s Used & How to Get One

Area code 939 covers San Juan and surrounding areas in Puerto Rico. It was activated in 2001 as an overlay of area code 787. Today it shares its territory with overlay code 787. For the full picture, see all Puerto Rico area codes.

Quick Facts: Area Code 939

State	Puerto Rico
Primary city	San Juan
Cities also served	San Juan, Bayamón, Ponce, Carolina, Guaynabo, Caguas, Trujillo Alto, Santurce
Time zone	Atlantic (UTC-4 (no DST observed))
Year established	September 15, 2001
Original 1947 NPA?	No
Parent code	787
Overlay codes	787
Currently in use?	Yes, actively assigned
Ten-digit dialing required?	Yes

Cities Served by Area Code 939

Area code 939 serves Entire island of Puerto Rico, including the following cities and communities:

• San Juan
• Bayamón
• Ponce
• Carolina
• Guaynabo
• Caguas
• Trujillo Alto
• Santurce

Nearby area codes covering the same broader region include: 787.

How to Get a 939 Phone Number

There are three ways to get a phone number with the 939 area code, each suited to a different need:

1. Buy from a premium-number specialist. Companies that hold curated inventories of specific area codes can sell you a 939 number directly, often with a one-time fee and ownership transferred to you (no recurring carrier fees). This is the option for picking a specific memorable number, or for getting an area code that most carriers won’t let you request. Browse our 939 inventory.
2. Sign up with a VoIP carrier. Voice-over-IP services (such as Google Voice, OpenPhone, Grasshopper, and many others) can typically provision a 939 number on request, especially for active overlay codes. You won’t usually get to pick the specific number, but you’ll get a working line in the area code. This is the cheapest option for anyone who doesn’t need a particular number.
3. Port an existing 939 number. If you already have a 939 phone number with another carrier, you can transfer it (port it) to a new service provider while keeping the number. This works for landlines, cell phones, and VoIP services, though landlines outside of Puerto Rico sometimes can’t accept inbound ports of 939 numbers due to 911 routing rules.

Looking for a 939 number? 212areacode.com offers premium 939 numbers for San Juan, Puerto Rico — choose your number, port it to any carrier in 3–5 business days, and pay a one-time fee with no monthly charges. Browse available 939 numbers →

Frequently Asked Questions

Is the 939 area code still in use?
Yes. 939 is actively assigned to new phone lines in Entire island of Puerto Rico.

What is the difference between 939 and 787?
Today they share the same geographic territory in Puerto Rico. New phone lines in the area may be assigned either code. The two codes work identically for calling, billing, and service.

What is the parent area code of 939?
Area code 939 is an overlay of 787. Both codes serve the same region of Puerto Rico.

Can I get a 939 number if I don't live in Puerto Rico?
Yes. Phone numbers are no longer tied to a physical address. With VoIP service or a number broker, you can hold a 939 number from anywhere in the world. The number routes to whatever device or carrier you specify.

Is 939 a scam area code?
No. 939 is a legitimate, active area code for Entire island of Puerto Rico. Like any area code, scammers occasionally spoof 939 caller IDs, but the code itself is heavily used by real Puerto Rico businesses, government offices, and residents.

Where is the 939 area code located?
Area code 939 covers the entire island of Puerto Rico, serving cities including San Juan, Bayamón, Ponce, Carolina, and Guaynabo. It is an overlay of area code 787 and serves the exact same geographic territory.

Why was area code 939 created?
Within four years of its 1996 introduction, area code 787 was nearing exhaustion due to rapid growth in cell phones and dial-up internet connections. NANPA introduced 939 as an overlay on September 15, 2001, allowing new numbers to be issued without requiring existing 787 subscribers to change their numbers.

Do I need to dial ten digits to call a 939 number?
Yes. Because 939 and 787 are overlays sharing the same territory, ten-digit dialing (area code + seven-digit number) is required for all calls within Puerto Rico.

Is calling a 939 number from the U.S. mainland a long-distance call?
Technically yes, but most U.S. mobile and landline plans with unlimited domestic calling include calls to Puerto Rico at no extra charge. Check with your carrier to confirm.

Related Reading

• Why the Right Area Code Matters
• When Did We Start Using Area Codes?
• How Many Area Codes Are In the US?
• Who Invented Area Codes?

Looking for a different code? See the complete US area code directory.