Area code
405
405 is a United States area code. Under the North American Numbering Plan it belongs to Oklahoma, which has 5 area codes in total.
Validate a number in 405
Paste a full number and the tool checks it against the numbering plan. It returns the standard formats, the line type the plan assigns and the area code region.
Digits with or without punctuation work. Numbers outside the US are read with the +country code.
Area code 405 at a glance
NANPA lists 782 central office codes (prefixes) in use in area code 405, held by 43 holders across 93 rate centers.
| Fact | Value |
|---|---|
| In service since | 1947-01-01 |
| Time zone | Central (C) |
| Assigned overlays | 572 (2021-05-24) |
| Prefixes in use | 782 |
| Pooled prefixes | 562 (72%) |
| Rate centers | 93 |
| Companies holding prefixes | 43 |
| Assignment dates on file | 2001-01-03 to 2025-12-22 (285 prefixes) |
| ZIP codes in its places | 101 |
Rate centers in area code 405
The largest rate center is OKLA CITY, with 336 prefixes (43%).
| Rate center | Prefixes | Share |
|---|---|---|
| OKLA CITY | 336 | 43% |
| BRITTON | 36 | 5% |
| BETHANY | 31 | 4% |
| EDMOND | 30 | 4% |
| STILLWATER | 26 | 3% |
| MOORE | 25 | 3% |
| NORMAN | 24 | 3% |
| SHAWNEE | 17 | 2% |
| 85 other rate centers | 257 | 33% |
Who holds the prefixes in 405
Southwestern Bell holds the most prefixes, 236 (30%). 72% of the prefixes are pooled, which means their thousands-blocks can belong to different companies.
| Holder | Prefixes | Share |
|---|---|---|
| Southwestern Bell | 236 | 30% |
| New Cingular Wireless PCS | 102 | 13% |
| T-Mobile USA | 87 | 11% |
| Onvoy | 57 | 7% |
| Verizon Wireless | 55 | 7% |
| Comcast IP Phone | 41 | 5% |
| 37 other carriers | 204 | 26% |
A prefix holder is the company a code was assigned to, not necessarily a number's current carrier, because numbers can be ported to another company. Find which carrier a number is on, or browse the prefix holders.
History of area code 405
- 1947-01-01 Area code 405 went into service.
- 1997-11-01 Area code 580 went into service and names 405 as its parent.
- 2021-05-24 Area code 572 went into service as an overlay in the same area as 405.
Area codes nearest to 405
Distance is measured between the centers of the ZIP code places each area code serves, so it is a rough guide.
Overlay codes in the same area
ZIP codes in area code 405
101 ZIP codes fall in places that have a rate center in this area code.
| Place | ZIP codes |
|---|---|
| Edmond, OK | 6 |
| Norman, OK | 6 |
| Stillwater, OK | 5 |
A ZIP code and an area code are unrelated systems. A ZIP code can sit in more than one area code, and an area code spans many ZIP codes.
Complaints on file for 405 numbers
3,720 FCC complaints are on file for 3,103 numbers in 405, most often filed as "Unwanted Calls". These are unverified consumer reports.
| Year of latest complaint | Numbers |
|---|---|
| 2023 | 154 |
| 2024 | 242 |
| 2025 | 174 |
Other area codes in Oklahoma
Oklahoma is one state with 5 area codes in the NANPA table. 405 is one of them.
Next to 405 in the numbering table
These are the codes just before and after 405 when all are sorted by number. They are neighbours on the list, not necessarily on the map.
What the area code does and does not tell you
A number that starts with 405 was first assigned in Oklahoma. That is a fact about where the number began, and it is a useful hint when you check a form entry, for example a billing address in Oklahoma next to a 405 phone number.
It does not show where the person is today. A number stays with its owner after a move or a change of provider (number portability), and mobile numbers travel with the handset. The area code also cannot tell you whether the line is active, who the carrier is, or whether the number is mobile or fixed: the plan shares those ranges. Read more about the area code, the numbering plan and line type.
Check numbers in bulk with the API
| Product | Credits | Docs |
|---|---|---|
| Phone Numbering-Plan Validation | 1 credit per valid number | API docs |
| Phone Intelligence (carrier and line status) | 1 credit per check (invalid numbers outside the US and Canada are free) | Product page |
Questions about area code 405
Where is area code 405?
NANPA assigns area code 405 to Oklahoma, United States.
In which state does area code 405 sit?
Oklahoma. 405 is one of 5 area codes the NANPA table assigns to the state.
Which places does area code 405 cover?
The places with the most ZIP codes among the rate centers in 405 are Edmond, OK, Norman, OK and Stillwater, OK. The rate center list on this page shows all of them.
Who owns area code 405?
NANPA assigns area codes. Within 405, Southwestern Bell holds the most prefixes, 236 prefixes or 30%.
Which time zone does 405 use?
The NANPA NPA report lists the time zone for 405 as Central (C).
What year did 405 enter service?
The NANPA NPA report gives an in-service date of 1947-01-01, so 405 has been in use since 1947.
Does area code 405 have an overlay?
Yes. 572 (in service 2021-05-24) shares the same area with 405, so numbers from all of them are local to each other.
Which area codes are nearest to 405?
The area codes closest to 405, measured between the centers of the ZIP code places they serve, are 580 (about 41 miles), 539 (about 104 miles), 918 (about 105 miles), 940 (about 143 miles) and 316 (about 161 miles).
How many prefixes does area code 405 have?
NANPA's report dated 2026-10-17 lists 782 prefixes in service in 405, spread over 93 rate centers and 43 holders.
Are there complaints about 405 numbers?
The FCC data on file has 3,720 complaints for 3,103 numbers in 405. They are unverified consumer reports. A number with no complaints on file is not proven safe.
Area code assignments: North American Numbering Plan Administrator NPA report, file dated 10/17/2026, retrieved 2026-10-17. Source file. New codes are assigned several times a year. Prefixes, rate centers, holders, time zone, in-service date and overlays: NANPA central office code report dated 2026-10-17 and NPA report dated 2026-10-18. Complaints: FCC consumer complaints open data, fetched 2026-10-17. ZIP code places: Postal code places and coordinates: GeoNames (geonames.org), licensed CC BY 4.0.