North American Numbers Source-cited · ownership disclosed
Area code
572
In service
United States · since 2021

Oklahoma City (overlay)

An all-service overlay of area code 405, introduced in 2021 to relieve number exhaustion in central Oklahoma. It shares the exact geography of 405.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Oklahoma City (overlay)
Type
geographic
Status
in service
In service since
2021
Projected exhaust
2055 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 572 is

Central Oklahoma — identical footprint to 405..

Communities served wholly or partly by 572:

Oklahoma CityNormanEdmondMooreStillwaterGuthrie

Same service area as 405.

B · Relationships

How it relates to other codes

The codes 572 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 · 2021 405 Oklahoma City Overlays the entire 405 numbering plan area in central Oklahoma.
What's changing. Overlay of 405 (same geography); ten-digit dialing required.
C · History

How 572 got here

2020-01-09
The Oklahoma Corporation Commission-approved all-service overlay 572 was announced.
Source: Wikipedia
2021-01
Overlay went into service with mandatory ten-digit dialing.
Source: Wikipedia
D · Capacity

How full it is

Prefixes assigned
131
Prefixes available
669
Thousands-blocks assigned
922

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

Compare 572 with another code →
Sources
Wikipedia ↗
Area code 572
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.