405 area code — Oklahoma City, OK geographic

Data: NANPA public reports, current as of July 28, 2026.

If a call shows area code 405, the number was issued in the Oklahoma City area — a code active since 1947, on Central time. It is part of the 405/572 overlay complex — these codes share the same territory. Note that porting and VoIP mean a 405 number can be used from anywhere — the code marks where the number was assigned.

783 central-office prefixes are currently active in this code, spread across 43 code-holding carriers. Thousands-block pooling applies to 562 prefixes, so a single prefix can belong to several carriers. Its prefixes map to 93 distinct rate centers.

NANPA projects numbering capacity for the 405/572 complex to exhaust in 2Q 2055.

It has since spawned 580 (1997), 572 (2021).

Dialing: 10D locally, 10D to other codes (1+10 digit permissible at each service providers discretion).

Worth noting: 405 is the oldest area code in Oklahoma, in service since 1947.

Use this page to decode where 405 numbers come from — and remember that spoofing means the screen can lie about everything except your own caution.

Largest localities in 405

FAQ

Why do 572 and 405 cover the same place?

They are overlays: when a code runs low on numbers, a new code is added over the same territory instead of splitting it. The 405/572 complex shares one service area, and local calls are dialed with 10 digits.

Will 405 run out of numbers?

NANPA's current forecast projects exhaust in 2Q 2055 — decades of capacity remain.

Why am I getting spam calls from 405 numbers?

Scammers spoof recognizable area codes so calls look local or familiar. A displayed 405 number does not prove the call originated there — see our guide to spotting spoofed calls.

Where is a 405 number from?

405 is assigned to Oklahoma City and surrounding areas of Oklahoma in the Central time zone. The three digits after the area code (the prefix) narrow it down to a rate center.