646 area code — New York City, NY geographic
Area code 646 is a geographic code serving New York City, New York in the Eastern time zone. It has been in service since July 1, 1999. The same territory is also served by its overlay codes (212/332/646/917 complex). Keep in mind the code identifies where the number was registered; the person calling may be elsewhere.
The code currently holds 781 working prefixes, held by 40 different carriers. Of these, 667 are pooled prefixes shared by multiple carriers. Numbers are anchored to a single rate center.
The code was carved out of 212 (1999).
The current NANPA exhaust forecast for the 212/332/646/917 complex is 3Q 2055.
Local calls inside 646 are dialed 1+10D; 10-digit dialing is permissible for home npa local calls.
To check where a specific 646 number was issued, look up its six-digit prefix; to check who is actually calling, ignore the display and verify through an official callback number — caller ID is assertable and routinely spoofed.
Largest localities in 646
| Locality (rate center) | Active prefixes | Also served by |
|---|---|---|
| New York City Zone 01 | 781 | 212, 332, 917 |
FAQ
Is 646 a toll-free number?
No. 646 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.
Why do 212 and 646 cover the same place?
They are overlays: when a code runs low on numbers, a new code is added over the same territory instead of splitting it. The 212/332/646/917 complex shares one service area, and local calls are dialed with 10 digits.
Will 646 run out of numbers?
NANPA's current forecast projects exhaust in 3Q 2055 — decades of capacity remain.