---
title: "Area code 447: Illinois, United States"
url: "https://lookvalid.com/area-code/447.md"
canonical_url: "https://lookvalid.com/area-code/447"
last_updated: "2026-10-23"
type: "reference"
summary: "Area code 447 serves Illinois, United States. Number formats, numbering rules, a live phone validator and the other codes in Illinois."
---

# Area code 447: Illinois, United States

Area code 447 serves Illinois, United States. Number formats, numbering rules, a live phone validator and the other codes in Illinois.

NANPA lists 213 central office codes (prefixes) in use in area code 447, held by 28 holders across 118 rate centers.
Onvoy holds the most prefixes, 58 (27%). 99% of the prefixes are pooled, which means their thousands-blocks can belong to different companies.
The FCC unwanted-call data has 95 complaints on file for 90 numbers in 447, most often filed as "Unwanted Calls". These are consumer reports, not findings.

## Facts

- In service since: 2021-03-27
- Time zone: Central (C)
- Assigned overlays: 217 (1947-01-01)
- Prefixes in use: 213
- Pooled prefixes: 211 (99%)
- Rate centers: 118
- Companies holding prefixes: 28
- Assignment dates on file: 2021-02-01 to 2026-08-18 (211 prefixes)
- ZIP codes in its places: 112

## Rate centers

| Rate center | Prefixes | Share |
| --- | --- | --- |
| DANVILLE | 18 | 8% |
| SPRINGFLD | 18 | 8% |
| CHAMPAURBN | 15 | 7% |
| CHARLESTON | 15 | 7% |
| MATTOON | 14 | 7% |
| QUINCY | 6 | 3% |
| DECATUR | 5 | 2% |
| JACKSONVL | 4 | 2% |
| 110 other rate centers | 118 | 55% |

## Carriers

| Holder | Prefixes | Share |
| --- | --- | --- |
| Onvoy | 58 | 27% |
| New Cingular Wireless PCS | 34 | 16% |
| Fractel | 30 | 14% |
| Nuso | 8 | 4% |
| Onvoy Spectrum | 8 | 4% |
| Teleport Communications America | 8 | 4% |
| 22 other carriers | 67 | 31% |

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 217, named as the parent of 447 in the NANPA report, was in service.
- 2021-03-27: Area code 447 went into service.

## Nearest area codes

The area codes closest to 447, measured between the centers of the ZIP code places they serve, are 309 (about 74 miles), 618 (about 112 miles), 314 (about 114 miles), 557 (about 114 miles) and 815 (about 115 miles).

## ZIP codes

112 ZIP codes fall in places that have a rate center in this area code. The places with the most are Decatur, IL (6 ZIP codes), Quincy, IL (3 ZIP codes) and Danville, IL (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

95 complaints for 90 numbers. Numbers whose latest complaint falls in each year:

- 2023: 6
- 2024: 20
- 2025: 21

## Questions

### Where is area code 447?

NANPA assigns area code 447 to Illinois, United States.

### In which state does area code 447 sit?

Illinois. 447 is one of 17 area codes the NANPA table assigns to the state.

### Which places does area code 447 cover?

The places with the most ZIP codes among the rate centers in 447 are Decatur, IL, Quincy, IL and Danville, IL. The rate center list on this page shows all of them.

### Who owns area code 447?

NANPA assigns area codes. Within 447, Onvoy holds the most prefixes, 58 prefixes or 27%.

### Which time zone does 447 use?

The NANPA NPA report lists the time zone for 447 as Central (C).

### What year did 447 enter service?

The NANPA NPA report gives an in-service date of 2021-03-27, so 447 has been in use since 2021.

### Does area code 447 have an overlay?

Yes. 217 (in service 1947-01-01) shares the same area with 447, so numbers from all of them are local to each other.

### Which area codes are nearest to 447?

The area codes closest to 447, measured between the centers of the ZIP code places they serve, are 309 (about 74 miles), 618 (about 112 miles), 314 (about 114 miles), 557 (about 114 miles) and 815 (about 115 miles).

### How many prefixes does area code 447 have?

NANPA's report dated 2026-10-17 lists 213 prefixes in service in 447, spread over 118 rate centers and 28 holders.

### Are there complaints about 447 numbers?

The FCC data on file has 95 complaints for 90 numbers in 447. 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).