---
title: "Area code 918: Oklahoma, United States"
url: "https://lookvalid.com/area-code/918.md"
canonical_url: "https://lookvalid.com/area-code/918"
last_updated: "2026-10-23"
type: "reference"
summary: "Area code 918 serves Oklahoma, United States. Number formats, numbering rules, a live phone validator and the other codes in Oklahoma."
---

# Area code 918: Oklahoma, United States

Area code 918 serves Oklahoma, United States. Number formats, numbering rules, a live phone validator and the other codes in Oklahoma.

NANPA lists 782 central office codes (prefixes) in use in area code 918, held by 55 holders across 181 rate centers.
Southwestern Bell holds the most prefixes, 233 (30%). 65% of the prefixes are pooled, which means their thousands-blocks can belong to different companies.
The FCC unwanted-call data has 2,631 complaints on file for 2,197 numbers in 918, most often filed as "Unwanted Calls". These are consumer reports, not findings.

## Facts

- In service since: 1953-01-01
- Time zone: Central (C)
- Assigned overlays: 539 (2011-04-01)
- Prefixes in use: 782
- Pooled prefixes: 506 (65%)
- Rate centers: 181
- Companies holding prefixes: 55
- Assignment dates on file: 2001-01-16 to 2025-03-10 (210 prefixes)
- ZIP codes in its places: 201

## Rate centers

| Rate center | Prefixes | Share |
| --- | --- | --- |
| TULSA | 275 | 35% |
| BROKENARRW | 29 | 4% |
| MUSKOGEE | 28 | 4% |
| BARTLESVL | 26 | 3% |
| TAHLEQUAH | 20 | 3% |
| MCALESTER | 16 | 2% |
| JENKS | 12 | 2% |
| MIAMI | 11 | 1% |
| 173 other rate centers | 365 | 47% |

## Carriers

| Holder | Prefixes | Share |
| --- | --- | --- |
| Southwestern Bell | 233 | 30% |
| New Cingular Wireless PCS | 93 | 12% |
| Verizon Wireless | 50 | 6% |
| T-Mobile USA | 49 | 6% |
| Windstream Comm SW | 36 | 5% |
| United States Cellular | 32 | 4% |
| 49 other carriers | 289 | 37% |

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.

## History

- 1953-01-01: Area code 918 went into service.
- 2011-04-01: Area code 539 went into service as an overlay in the same area as 918.

## Nearest area codes

The area codes closest to 918, measured between the centers of the ZIP code places they serve, are 479 (about 97 miles), 572 (about 101 miles), 405 (about 105 miles), 580 (about 144 miles) and 417 (about 147 miles).

## ZIP codes

201 ZIP codes fall in places that have a rate center in this area code. The places with the most are Tulsa, OK (52 ZIP codes), Claremore, OK (3 ZIP codes) and Muskogee, OK (3 ZIP codes). A ZIP code and an area code are unrelated systems, so a ZIP code can sit in more than one area code and an area code spans many ZIP codes.

## Complaints on file

2,631 complaints for 2,197 numbers. Numbers whose latest complaint falls in each year:

- 2023: 144
- 2024: 136
- 2025: 69

## Questions

### Where is area code 918?

NANPA assigns area code 918 to Oklahoma, United States.

### In which state does area code 918 sit?

Oklahoma. 918 is one of 5 area codes the NANPA table assigns to the state.

### Which places does area code 918 cover?

The places with the most ZIP codes among the rate centers in 918 are Tulsa, OK, Claremore, OK and Muskogee, OK. The rate center list on this page shows all of them.

### Who owns area code 918?

NANPA assigns area codes. Within 918, Southwestern Bell holds the most prefixes, 233 prefixes or 30%.

### Which time zone does 918 use?

The NANPA NPA report lists the time zone for 918 as Central (C).

### What year did 918 enter service?

The NANPA NPA report gives an in-service date of 1953-01-01, so 918 has been in use since 1953.

### Does area code 918 have an overlay?

Yes. 539 (in service 2011-04-01) shares the same area with 918, so numbers from all of them are local to each other.

### Which area codes are nearest to 918?

The area codes closest to 918, measured between the centers of the ZIP code places they serve, are 479 (about 97 miles), 572 (about 101 miles), 405 (about 105 miles), 580 (about 144 miles) and 417 (about 147 miles).

### How many prefixes does area code 918 have?

NANPA's report dated 2026-10-17 lists 782 prefixes in service in 918, spread over 181 rate centers and 55 holders.

### Are there complaints about 918 numbers?

The FCC data on file has 2,631 complaints for 2,197 numbers in 918. They are unverified consumer reports. A number with no complaints on file is not proven safe.

Sources: NANPA central office code report dated 2026-10-17; NANPA NPA report dated 2026-10-18; FCC unwanted-call complaints, data fetched 2026-10-17; ZIP code places from GeoNames (CC BY 4.0).