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

GARFIELD prefixes in area code 479

NANPA records 5 assigned NXX blocks to rate center GARFIELD in area code 479, 0.9% of the 569 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. 3 holders hold those blocks, the largest being NEW CINGULAR WIRELESS PCS, LLC - IL (2), ONVOY, LLC - AR (2), BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC (1). The earliest assignment on record here is 2002-10-17 and the most recent 2023-09-08. 4 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 320, 509, 620 – overlay codes cover the same geography, so a rate center is served by all of them.

5 assigned blocks – 0.9% of 479
3 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
479-330 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2002-10-17 no yes
479-342 Onvoy ONVOY, LLC - AR 2018-09-19 yes yes
479-359 Brightspeed BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC – yes yes
479-378 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2020-01-21 yes yes
479-528 Onvoy ONVOY, LLC - AR 2023-09-08 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 2 40%
ONVOY, LLC - AR Onvoy 2 40%
BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC Brightspeed 1 20%

Frequently asked

Which prefixes belong to GARFIELD in area code 479?

5 blocks: 330, 342, 359, 378, 528. The table above gives the holder of each.

Which carriers have numbers in GARFIELD?

NEW CINGULAR WIRELESS PCS, LLC - IL (2 blocks), ONVOY, LLC - AR (2 blocks), BRIGHTSPEED OF NORTHWEST ARKANSAS, 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 GARFIELD 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 479

All 569 prefixes in 479