Area code 631 vs 934
631 and 934 are overlay codes: they cover the same ground in New York, and a number in one is a local call to the other. 631 is the original, in service since 1999. 934 was added in 2016 because the first was filling up – that is what an overlay is for. Today 631 has 782 of 786 blocks assigned (99.5%) and 934 has 131 of 786 (16.7%), so a new number in the area now almost always comes from 934. In the 33 days to 30 October 2026, 631 drew 819 FTC complaints against 184 for 934 – 94th and 352nd 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
| 631 | 934 | |
|---|---|---|
| In service since | 1999 | 2016 |
| Region | New York | New York |
| Blocks assigned | 782 of 786 (99.5%) | 131 of 786 (16.7%) |
| Largest block holder | Verizon 43.1% | Other CLEC / VoIP 39.7% |
| Complaints, 28 Sep – 30 Oct 2026 | 819 (#94) | 184 (#352) |
| Rate centers | 54 | 46 |
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 631 and 934?
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 631 and 934?
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 631 or 934?
Whichever has blocks left – currently 934, at 16.7% allocated against 99.5% for the other. Carriers draw from the code with free blocks, which is why the newer code spreads over time.
Is 631 or 934 more likely to be a spam call?
On the complaint data, 631 appears more often. 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: 631 · 934. All codes in New York: New York area codes.