North American Numbers Source-cited · ownership disclosed
Area code
646
In service
United States · since 1999

Manhattan (overlay)

All-service overlay of Manhattan, added in 1999 alongside 212 and 917.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Manhattan (overlay)
Type
geographic
Status
in service
In service since
1999
Projected exhaust
2055 Q3

Status, dates and counts are read from NumberResearch (NANPA / CNAC / FCC records). Assignment records show initial assignees, not the carrier serving a number today.

A · Where it is

Where 646 is

The borough of Manhattan, New York City.

Communities served wholly or partly by 646:

Manhattan

Same footprint as 212.

B · Relationships

How it relates to other codes

The codes 646 was split from, spawned, or shares its area with. A split divides the map and changes some numbers; an overlay shares the same ground and changes none — what's the difference?

Overlay · 1999 212 Manhattan Overlays 212's Manhattan territory.
Overlay · 1999 917 New York City (overlay) Co-overlays Manhattan with citywide 917.
Overlay · 2017 332 Manhattan (overlay) Later joined by 332 in the Manhattan complex.
What's changing. Active overlay of Manhattan (212/332/917 complex).
C · History

How 646 got here

1999-07-01
Added as a Manhattan overlay as 917 mobile numbers grew scarce.
Source: Wikipedia 212/646/332
2017
Reportedly projected to exhaust by ~2030, contributing to the 332 addition.
Source: Wikipedia 212/646/332
D · Capacity

How full it is

Prefixes assigned
800
Prefixes available
0
Thousands-blocks assigned
5,504

Prefix-assignment counts describe allocation to carriers, not how many individual numbers are in use. Full technical records: NumberResearch ↗.

Compare 646 with another code →
Sources
Wikipedia (secondary) ↗
Area codes 212, 646, and 332
NumberResearch.org ↗
Live status, dates, assignment counts and exhaust forecast — data as of 2026-09-18 (CC BY 4.0).

Place, relationships and history above are compiled by North American Numbers from the sources listed and last checked 2026-09-18. A check date is not an expert review — see how this is made. Flag an error.