NumberingData
Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records

MATTOON prefixes in area code 447

NANPA records 15 assigned NXX blocks to rate center MATTOON in area code 447, 6.8% of the 221 blocks assigned in the code. A rate center is the billing geography a block is allocated to – NANPA truncates the name to ten characters, so read it as a NANPA label rather than a town. 8 holders hold those blocks, the largest being NEW CINGULAR WIRELESS PCS, LLC - IL (8), HD CARRIER LLC (1), IP HORIZON LLC (1). The earliest assignment on record here is 2021-03-17 and the most recent 2026-09-09. 15 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area codes 217, 534, 715 – overlay codes cover the same geography, so a rate center is served by all of them.

15 assigned blocks – 6.8% of 447
8 holders of record
15 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
447-249 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2023-02-16 yes yes
447-252 HD CARRIER LLC 2023-03-08 yes yes
447-259 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2023-07-18 yes yes
447-279 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2023-10-13 yes yes
447-280 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2023-10-20 yes yes
447-289 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2024-02-23 yes yes
447-291 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2024-04-05 yes yes
447-296 IP HORIZON LLC 2024-04-18 yes yes
447-312 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2025-05-15 yes yes
447-322 TERRA NOVA TELECOM INC. 2025-06-23 yes yes
447-335 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2026-09-09 yes no
447-439 EXIANT COMMUNICATIONS LLC 2026-03-30 yes yes
447-450 LEAP TELECOM, LLC 2024-11-07 yes yes
447-497 Twilio TWILIO INTERNATIONAL, INC. 2022-02-14 yes yes
447-810 Onvoy ONVOY, LLC 2021-03-17 yes yes

The holder is who received the block from the numbering administrator. It is not necessarily the carrier serving a given number: numbers move with their owners, and a pooled block is shared.

Who holds the blocks

HolderBrandBlocksShare here
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 8 53.3%
HD CARRIER LLC – 1 6.7%
IP HORIZON LLC – 1 6.7%
TERRA NOVA TELECOM INC. – 1 6.7%
EXIANT COMMUNICATIONS LLC – 1 6.7%
LEAP TELECOM, LLC – 1 6.7%
TWILIO INTERNATIONAL, INC. Twilio 1 6.7%
ONVOY, LLC Onvoy 1 6.7%

Same rate center in other codes

Overlay codes cover the same geography, so one rate center is served by all of them.

Frequently asked

Which prefixes belong to MATTOON in area code 447?

15 blocks: 249, 252, 259, 279, 280, 289, 291, 296, 312, 322, 335, 439 and 3 more, all listed in the table above.

Which carriers have numbers in MATTOON?

NEW CINGULAR WIRELESS PCS, LLC - IL (8 blocks), HD CARRIER LLC (1 block), IP HORIZON LLC (1 block), TERRA NOVA TELECOM INC. (1 block), EXIANT COMMUNICATIONS LLC (1 block), LEAP TELECOM, LLC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is MATTOON a city?

It is a rate center – the unit NANPA allocates number blocks to. Its name is abbreviated to ten characters and is not necessarily a settlement: we print it as recorded rather than guess at the full name.

Other rate centers in 447

All 221 prefixes in 447