North American Numbers Source-cited · ownership disclosed
Area code
917
In service
United States · since 1992

New York City (overlay)

Citywide overlay for all five NYC boroughs, introduced in 1992 originally for cellphones and pagers. The first overlay area code in the North American Numbering Plan.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
New York City (overlay)
Type
geographic
Status
in service
In service since
1992
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 917 is

All five boroughs of New York City.

Communities served wholly or partly by 917:

ManhattanBronxBrooklynQueensStaten Island

Overlays both the 212/332/646 (Manhattan) and 347/718/929/465 (outer-borough) complexes.

B · Relationships

How it relates to other codes

The codes 917 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 · 1992 212 Manhattan Overlays the Manhattan complex.
Overlay · 1992 718 Outer Boroughs Overlays the outer-borough complex.
Overlay · 1999 646 Manhattan (overlay) Shares Manhattan geography with 646.
Overlay · 2011 929 Outer Boroughs (overlay) Shares outer-borough geography with 929.
What's changing. Active citywide overlay of all NYC area codes; no longer restricted to mobile service.
C · History

How 917 got here

1990
Proposed to serve cellphones/pagers in Manhattan and lines in the Bronx.
Source: Wikipedia 917
1992-02-04
Introduced citywide; NYC cellphones switched to 917, freeing landline numbers. First NANP overlay.
Source: Wikipedia 917
D · Capacity

How full it is

Prefixes assigned
799
Prefixes available
1
Thousands-blocks assigned
2,439

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

Compare 917 with another code →
Sources
Wikipedia (secondary) ↗
Area code 917
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.