Area code 939 – Puerto Rico
939 has served Puerto Rico since 2001, split from 787. 359 of its 786 number blocks are allocated (46%). Other CLEC / VoIP is the largest holder with 54.0% of blocks, ahead of T-Mobile at 33.4%. It shares its geography with overlay codes 787, so local calls take all ten digits. Spam complaints are comparatively rare: 16 in the 33 days to 30 October 2026, 401st of the 422 codes with five or more complaints.
- State
- Puerto Rico
- In service since
- 2001
- Time zone
- Atlantic
- Shares area with
- 787
Who holds 939 number blocks
Share of the 359 assigned NXX blocks (45.7% of the 786 possible), across 15 carriers. This is share of number blocks, not of subscribers.
- Other CLEC / VoIP38.2%
- T-Mobile35.4%
- Liberty17.3%
- Inteliquent3.9%
- Charter3.9%
- Telnyx0.6%
- AT&T0.6%
- Comcast0.3%
Spam complaints naming 939
FTC Do Not Call complaints where the caller ID was a 939 number, 28 Sep – 30 Oct 2026 (33 days). Caller IDs on spam calls are frequently spoofed, so these are complaints about the code, not calls proven to originate in it.
Rate centers in 939
NANPA allocates number blocks to rate centers and records their names abbreviated to ten characters, so these are NANPA's codes rather than place names – CHAMPAURBN is Champaign-Urbana, NWYRCYZN01 is a New York City zone. We show them unchanged instead of guessing at the full names. Showing the largest 5 of 75.
Timeline
- 2001 939 goes into service, split from or overlaid on 787.
More about 939
Separate pages for the questions that need their own answer: what time it is there, what the complaint data says, who holds the number blocks, and how the code compares with the one it shares its area with.
Frequently asked about 939
What state is area code 939?
Puerto Rico. It covers the same area as 787/939.
Is a call from 939 a scam?
Not by itself. 939 drew 16 FTC complaints in the 33 days to 30 October 2026, 401st of 422 ranked codes – mid-pack or lower. Spam callers spoof caller IDs, so the only useful check is the full number.
Which carrier owns 939 numbers?
Other CLEC / VoIP holds the largest share of assigned number blocks at 54.0%. The rest is spread across 3 other carriers. This is share of number blocks, not of subscribers – people keep their numbers when they switch carriers.
Do I need to dial 10 digits in 939?
Yes – ten digits for local calls in 939, because it shares its area with another code.
Sources and verification
- NANPA – NPA Database (npa_report.csv), file date 11/01/2026, retrieved Nov 1, 2026
- NANPA – CO Code Assignment Records, All States (utilized), file updated 11/01/2026, retrieved Nov 1, 2026
- FTC – Do Not Call Reported Calls Data, 25 daily files 28 Sep – 30 Oct 2026, retrieved Nov 1, 2026
NANPA dialing note for this code: “10D”. Reviewed by the data desk. Spotted an error? Request a correction.