Area code 363 – New York
363 has served New York since 2023, split from 516. It is still largely empty: 38 of 786 number blocks allocated. No carrier dominates: Onvoy / Inteliquent 34.2%, AT&T 15.8%, Other CLEC / VoIP 13.2%. It shares its geography with overlay codes 516, so local calls take all ten digits. Spam complaints are comparatively rare: 38 in the 33 days to 30 October 2026, 390th of the 422 codes with five or more complaints.
Who holds 363 number blocks
Share of the 38 assigned NXX blocks (4.8% of the 786 possible), across 11 carriers. This is share of number blocks, not of subscribers.
- Onvoy34.2%
- AT&T15.8%
- Other CLEC / VoIP13.2%
- Bandwidth10.5%
- Verizon10.5%
- Charter10.5%
- T-Mobile2.6%
- Altice2.6%
Spam complaints naming 363
FTC Do Not Call complaints where the caller ID was a 363 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 363
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 11.
Timeline
- 2023 363 goes into service, split from or overlaid on 516.
More about 363
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 363
What state is area code 363?
New York. It covers the same area as 363/516.
Is a call from 363 a scam?
Not by itself. 363 drew 38 FTC complaints in the 33 days to 30 October 2026, 390th 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 363 numbers?
Onvoy / Inteliquent holds the largest share of assigned number blocks at 34.2%. 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 363?
Yes – ten digits for local calls in 363, 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.