North American Numbers Source-cited · ownership disclosed
Area code
445
In service
United States · since 2018

Philadelphia (overlay)

445 is the third code in the Philadelphia overlay complex, activated in 2018 to add capacity to the 215/267 numbering plan area.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Philadelphia (overlay)
Type
geographic
Status
in service
In service since
2018
Projected exhaust
2050 Q2

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 445 is

Philadelphia and inner Bucks/Montgomery suburbs (same as 215).

Communities served wholly or partly by 445:

PhiladelphiaNorristownDoylestown

Shares the 215/267 footprint. 445 was first proposed in 2000 but rescinded in 2003 before the 2018 activation.

B · Relationships

How it relates to other codes

The codes 445 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 · 2018 215 Philadelphia 445 overlays 215.
Overlay · 2018 267 Philadelphia (overlay) Part of 215/267/445 overlay complex.
What's changing. Active; part of 215/267/445 overlay.
C · History

How 445 got here

2000
Initially proposed as overlay; plan later rescinded in 2003.
Source: Wikipedia (secondary)
2018-02-03
Activated as second overlay on the Philadelphia NPA.
Source: Wikipedia 215/267/445
D · Capacity

How full it is

Prefixes assigned
196
Prefixes available
604
Thousands-blocks assigned
1,713

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

Compare 445 with another code →
Sources
Wikipedia ↗
Area codes 215, 267, and 445
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.