Area code
447
447 is a United States area code. Under the North American Numbering Plan it belongs to Illinois, which has 17 area codes in total.
Validate a number in 447
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.
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Area code 447 at a glance
NANPA lists 213 central office codes (prefixes) in use in area code 447, held by 28 holders across 118 rate centers.
| Fact | Value |
|---|---|
| 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 in area code 447
| 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% |
Who holds the prefixes in 447
Onvoy holds the most prefixes, 58 (27%). 99% of the prefixes are pooled, which means their thousands-blocks can belong to different companies.
| 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. Find which carrier a number is on, or browse the prefix holders.
History of area code 447
- 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.
Area codes nearest to 447
Distance is measured between the centers of the ZIP code places each area code serves, so it is a rough guide.
- 309 about 74 mi
- 618 about 112 mi
- 314 about 114 mi
- 557 about 114 mi
- 815 about 115 mi
Overlay codes in the same area
ZIP codes in area code 447
112 ZIP codes fall in places that have a rate center in this area code.
| Place | ZIP codes |
|---|---|
| Decatur, IL | 6 |
| Quincy, IL | 3 |
| Danville, IL | 2 |
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 447 numbers
95 FCC complaints are on file for 90 numbers in 447, most often filed as "Unwanted Calls". These are unverified consumer reports.
| Year of latest complaint | Numbers |
|---|---|
| 2023 | 6 |
| 2024 | 20 |
| 2025 | 21 |
Other area codes in Illinois
Illinois is one state with 17 area codes in the NANPA table. 447 is one of them.
Next to 447 in the numbering table
These are the codes just before and after 447 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 447 was first assigned in Illinois. 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 Illinois next to a 447 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 447
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.
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.