Area code 787 vs 939
787 and 939 are overlay codes: they cover the same ground in Puerto Rico, and a number in one is a local call to the other. 787 is the original, in service since 1996. 939 was added in 2001 because the first was filling up – that is what an overlay is for. Today 787 has 777 of 786 blocks assigned (98.9%) and 939 has 359 of 786 (45.7%), so a new number in the area now almost always comes from 939. In the 33 days to 30 October 2026, 787 drew 31 FTC complaints against 16 for 939 – 395th and 401st of 422 ranked codes. Older codes are spoofed more because they look more established. Neither code is better or safer than the other. They are the same geography, the same carriers and the same dialing rules; the difference is only how long each has existed and how full it is.
Side by side
| 787 | 939 | |
|---|---|---|
| In service since | 1996 | 2001 |
| Region | Puerto Rico | Puerto Rico |
| Blocks assigned | 777 of 786 (98.9%) | 359 of 786 (45.7%) |
| Largest block holder | Other CLEC / VoIP 53.2% | Other CLEC / VoIP 38.2% |
| Complaints, 28 Sep – 30 Oct 2026 | 31 (#395) | 16 (#401) |
| Rate centers | 84 | 75 |
Block share is allocation by the numbering administrator, not subscribers. Complaint counts cover 28 Sep – 30 Oct 2026 and measure how often each code is spoofed on caller ID.
Frequently asked
What is the difference between area codes 787 and 939?
None geographically – they overlay the same area, so the difference is age and how many numbers are left.
Do I need to dial the area code between 787 and 939?
Yes. Overlay areas use ten-digit dialing for local calls, including between the two codes. Seven digits reaches a recording.
Will a new number be 787 or 939?
Whichever has blocks left – currently 939, at 45.7% allocated against 98.9% for the other. Carriers draw from the code with free blocks, which is why the newer code spreads over time.
Is 787 or 939 more likely to be a spam call?
On the complaint data, neither stands out. But spoofing drives those counts, so this is about which code gets imitated, not which numbers are real.
Sources
- 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, 28 Sep – 30 Oct 2026, retrieved Nov 1, 2026
Each code on its own: 787 · 939. All codes in Puerto Rico: Puerto Rico area codes.