Area code 631 – New York
631 has served New York since 1999, split from 516. All but a handful of its 786 number blocks are allocated (782 of 786), so it is effectively exhausted. Verizon is the largest holder with 43.1% of blocks, ahead of Other CLEC / VoIP at 15.5%. It shares its geography with overlay codes 934, so local calls take all ten digits. 819 FTC complaints named a 631 caller ID in the 33 days to 30 October 2026, putting it 94th of 422 codes with five or more complaints.
Who holds 631 number blocks
Share of the 782 assigned NXX blocks (99.5% of the 786 possible), across 39 carriers. This is share of number blocks, not of subscribers.
- Verizon43.1%
- AT&T11.1%
- T-Mobile10.9%
- Lumen7.2%
- Altice7%
- Other CLEC / VoIP6.9%
- Onvoy4.7%
- Windstream4.1%
- Peerless1.7%
- Bandwidth1.5%
- Spok1.2%
- Telnyx0.4%
- American Messaging0.1%
- Charter0.1%
Spam complaints naming 631
FTC Do Not Call complaints where the caller ID was a 631 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 631
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 54.
Timeline
- 1999 631 goes into service, split from or overlaid on 516.
More about 631
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 631
What state is area code 631?
New York. It covers the same area as 631/934.
Can I still get a 631 number?
Only from recycled stock. 782 of the 786 available blocks are already allocated, so new numbers in the area normally come from the overlay codes (631/934).
Is a call from 631 a scam?
Not by itself. 631 drew 819 FTC complaints in the 33 days to 30 October 2026, 94th 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 631 numbers?
Verizon holds the largest share of assigned number blocks at 43.1%. 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 631?
Yes – ten digits for local calls in 631, 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.