---
title: "Area code 940: Texas, United States"
url: "https://lookvalid.com/area-code/940.md"
canonical_url: "https://lookvalid.com/area-code/940"
last_updated: "2026-10-23"
type: "reference"
summary: "Area code 940 serves Texas, United States. Number formats, numbering rules, a live phone validator and the other codes in Texas."
---

# Area code 940: Texas, United States

Area code 940 serves Texas, United States. Number formats, numbering rules, a live phone validator and the other codes in Texas.

NANPA lists 504 central office codes (prefixes) in use in area code 940, held by 61 holders across 96 rate centers.
Southwestern Bell holds the most prefixes, 48 (10%). 73% of the prefixes are pooled, which means their thousands-blocks can belong to different companies.
The FCC unwanted-call data has 1,307 complaints on file for 982 numbers in 940, most often filed as "Unwanted Calls". These are consumer reports, not findings.

## Facts

- In service since: 1997-05-25
- Time zone: Central (C)
- Prefixes in use: 504
- Pooled prefixes: 367 (73%)
- Rate centers: 96
- Companies holding prefixes: 61
- Assignment dates on file: 2001-02-12 to 2026-06-15 (258 prefixes)
- ZIP codes in its places: 79

## Rate centers

| Rate center | Prefixes | Share |
| --- | --- | --- |
| WICHITAFLS | 83 | 16% |
| DENTON | 79 | 16% |
| DECATUR | 15 | 3% |
| MINERLWLLS | 14 | 3% |
| AUBREY | 13 | 3% |
| GAINESVL | 13 | 3% |
| BOWIE | 11 | 2% |
| LAKEDALLAS | 11 | 2% |
| 88 other rate centers | 265 | 53% |

## Carriers

| Holder | Prefixes | Share |
| --- | --- | --- |
| Southwestern Bell | 48 | 10% |
| New Cingular Wireless PCS | 45 | 9% |
| Onvoy | 31 | 6% |
| Frontier Comm Of Texas | 29 | 6% |
| Level 3 Communications | 28 | 6% |
| Verizon Wireless | 24 | 5% |
| 55 other carriers | 299 | 59% |

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 817, named as the parent of 940 in the NANPA report, was in service.
- 1997-05-25: Area code 940 went into service.

## Nearest area codes

The area codes closest to 940, measured between the centers of the ZIP code places they serve, are 817 (about 71 miles), 682 (about 72 miles), 214 (about 93 miles), 945 (about 94 miles) and 469 (about 95 miles).

## ZIP codes

79 ZIP codes fall in places that have a rate center in this area code. The places with the most are Denton, TX (10 ZIP codes), Rule, TX (2 ZIP codes) and Vernon, TX (2 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

1,307 complaints for 982 numbers. Numbers whose latest complaint falls in each year:

- 2023: 45
- 2024: 62
- 2025: 49

## Questions

### Where is area code 940?

NANPA assigns area code 940 to Texas, United States.

### In which state does area code 940 sit?

Texas. 940 is one of 29 area codes the NANPA table assigns to the state.

### Which places does area code 940 cover?

The places with the most ZIP codes among the rate centers in 940 are Denton, TX, Rule, TX and Vernon, TX. The rate center list on this page shows all of them.

### Who owns area code 940?

NANPA assigns area codes. Within 940, Southwestern Bell holds the most prefixes, 48 prefixes or 10%.

### Which time zone does 940 use?

The NANPA NPA report lists the time zone for 940 as Central (C).

### What year did 940 enter service?

The NANPA NPA report gives an in-service date of 1997-05-25, so 940 has been in use since 1997.

### Does area code 940 have an overlay?

The NANPA NPA report lists no other area code in an overlay with 940.

### Which area codes are nearest to 940?

The area codes closest to 940, measured between the centers of the ZIP code places they serve, are 817 (about 71 miles), 682 (about 72 miles), 214 (about 93 miles), 945 (about 94 miles) and 469 (about 95 miles).

### How many prefixes does area code 940 have?

NANPA's report dated 2026-10-17 lists 504 prefixes in service in 940, spread over 96 rate centers and 61 holders.

### Are there complaints about 940 numbers?

The FCC data on file has 1,307 complaints for 982 numbers in 940. 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).