Tulsa (overlay)

An all-service overlay of area code 918 activated in 2011 — the first overlay in Oklahoma. It shares the northeastern-Oklahoma geography of 918.

The essentials Numbering data · NumberResearch · as of 2026-09-18

Place

Tulsa (overlay)

Type

geographic

Status

in service

In service since

2011

Projected exhaust

2048 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 539 is

Northeastern Oklahoma — identical footprint to 918, centered on the Tulsa metropolitan area..

Communities served wholly or partly by 539:

TulsaBroken ArrowBartlesvilleMuskogeeClaremoreTahlequah

Same service area as 918.

B · Relationships

How it relates to other codes

The codes 539 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 · 2011 918 Tulsa Overlays the entire 918 numbering plan area in northeastern Oklahoma.

What's changing. Overlay of 918 (same geography); ten-digit dialing required.

C · History

How 539 got here

2011-04-01

Overlay 539 went into service — the first overlay in Oklahoma.

Source: Wikipedia

D · Capacity

How full it is

Prefixes assigned

253

Prefixes available

547

Thousands-blocks assigned

1,652

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

Compare 539 with another code →

Sources

Wikipedia ↗

Area code 539

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.