---
title: "Area code 414: Wisconsin, United States"
url: "https://lookvalid.com/area-code/414.md"
canonical_url: "https://lookvalid.com/area-code/414"
last_updated: "2026-10-23"
type: "reference"
summary: "Area code 414 serves Wisconsin, United States. Number formats, numbering rules, a live phone validator and the other codes in Wisconsin."
---

# Area code 414: Wisconsin, United States

Area code 414 serves Wisconsin, United States. Number formats, numbering rules, a live phone validator and the other codes in Wisconsin.

NANPA lists 551 central office codes (prefixes) in use in area code 414, held by 31 holders across 4 rate centers.
The largest rate center is MILWAUKZN1, with 437 prefixes (79%).
Wisconsin Bell holds the most prefixes, 189 (34%). 62% of the prefixes are pooled, which means their thousands-blocks can belong to different companies.
The FCC unwanted-call data has 2,722 complaints on file for 2,181 numbers in 414, most often filed as "Unwanted Calls". These are consumer reports, not findings.

## Facts

- In service since: 1947-01-01
- Time zone: Central (C)
- Prefixes in use: 551
- Pooled prefixes: 339 (62%)
- Rate centers: 4
- Companies holding prefixes: 31
- Assignment dates on file: 2001-02-02 to 2026-03-18 (193 prefixes)

## Rate centers

| Rate center | Prefixes | Share |
| --- | --- | --- |
| MILWAUKZN1 | 437 | 79% |
| MILWAUKZN4 | 45 | 8% |
| MILWAUKZN5 | 38 | 7% |
| MILWAUKZN3 | 31 | 6% |

## Carriers

| Holder | Prefixes | Share |
| --- | --- | --- |
| Wisconsin Bell | 189 | 34% |
| T-Mobile USA | 54 | 10% |
| New Cingular Wireless PCS | 51 | 9% |
| United States Cellular | 47 | 9% |
| Onvoy | 30 | 5% |
| Verizon Wireless | 25 | 5% |
| 25 other carriers | 155 | 28% |

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

- 1947-01-01: Area code 414 went into service.
- 1997-07-26: Area code 920 went into service and names 414 as its parent.
- 1999-09-25: Area code 262 went into service and names 414 as its parent.

## Complaints on file

2,722 complaints for 2,181 numbers. Numbers whose latest complaint falls in each year:

- 2023: 129
- 2024: 108
- 2025: 97

## Questions

### Where is area code 414?

NANPA assigns area code 414 to Wisconsin, United States.

### In which state does area code 414 sit?

Wisconsin. 414 is one of 8 area codes the NANPA table assigns to the state.

### Who owns area code 414?

NANPA assigns area codes. Within 414, Wisconsin Bell holds the most prefixes, 189 prefixes or 34%.

### Which time zone does 414 use?

The NANPA NPA report lists the time zone for 414 as Central (C).

### What year did 414 enter service?

The NANPA NPA report gives an in-service date of 1947-01-01, so 414 has been in use since 1947.

### Does area code 414 have an overlay?

The NANPA NPA report lists no other area code in an overlay with 414.

### How many prefixes does area code 414 have?

NANPA's report dated 2026-10-17 lists 551 prefixes in service in 414, spread over 4 rate centers and 31 holders.

### Are there complaints about 414 numbers?

The FCC data on file has 2,722 complaints for 2,181 numbers in 414. 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).