Oklahoma Area Codes
Compare 5 in-service area codes assigned to Oklahoma. Explore each code’s introduction date, overlays, possible time zones, and public prefix records.
Oklahoma numbering at a glance
- In-service area codes
- 5
- Time-zone labels in NANPA data
- Central
- Listed in-service or assigned prefixes
- 2,648 · source dated 2026-09-29
These are numbering assignments. The counts do not represent active phone numbers, current carriers, or a caller’s physical location.
Compare area codes in Oklahoma
| Code | Introduced | Other codes in overlay | Time zones | Listed prefixes |
|---|---|---|---|---|
| 405 | 01-Jan-1947 | 572 | Central | 782 |
| 539 | 01-Apr-2011 | 918 | Central | 237 |
| 572 | 24-May-2021 | 405 | Central | 115 |
| 580 | 01-Nov-1997 | None listed | Central | 732 |
| 918 | 01-Jan-1953 | 539 | Central | 782 |
Source: NANPA NPA database, dated 2026-09-28. Prefix counts: NANPA US assignment report. View official area-code maps.
Overlay groups in Oklahoma
Codes in an overlay group can serve the same broad numbering area. A person may keep a number after moving, and the displayed number may be spoofed.
Find a number in Oklahoma
Open an area-code page above to check a prefix and possible time zones. You can also search US telephone rate-center names; those names are not exact city coverage.
A code cannot verify the owner of a number. If an unexpected caller asks for money or sensitive information, verify the claim independently.