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

FARMINGTON prefixes in area code 573

NANPA records 16 assigned NXX blocks to rate center FARMINGTON in area code 573, 2.0% of the 786 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. 5 holders hold those blocks, the largest being NEW CINGULAR WIRELESS PCS, LLC - IL (7), SOUTHWESTERN BELL (5), T-MOBILE USA, INC. (2). The earliest assignment on record here is 2003-06-20 and the most recent 2023-10-27. 14 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 207, 209, 235, 248 – overlay codes cover the same geography, so a rate center is served by all of them.

16 assigned blocks – 2% of 573
5 holders of record
14 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
573-218 AT&T SOUTHWESTERN BELL – yes yes
573-330 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2003-06-20 yes yes
573-366 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
573-482 T-Mobile T-MOBILE USA, INC. – yes yes
573-631 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
573-664 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2010-02-03 yes yes
573-670 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2022-01-28 yes yes
573-701 AT&T SOUTHWESTERN BELL – yes yes
573-705 T-Mobile T-MOBILE USA, INC. 2006-04-05 yes yes
573-713 Onvoy ONVOY, LLC - MO 2016-03-04 yes yes
573-747 AT&T SOUTHWESTERN BELL – yes yes
573-756 AT&T SOUTHWESTERN BELL – no yes
573-760 AT&T SOUTHWESTERN BELL – yes yes
573-910 AIRESPRING, INC. 2018-05-08 yes yes
573-915 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2005-04-20 yes yes
573-974 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2023-10-27 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 7 43.8%
SOUTHWESTERN BELL AT&T 5 31.2%
T-MOBILE USA, INC. T-Mobile 2 12.5%
ONVOY, LLC - MO Onvoy 1 6.2%
AIRESPRING, INC. – 1 6.2%

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 FARMINGTON in area code 573?

16 blocks: 218, 330, 366, 482, 631, 664, 670, 701, 705, 713, 747, 756 and 4 more, all listed in the table above.

Which carriers have numbers in FARMINGTON?

NEW CINGULAR WIRELESS PCS, LLC - IL (7 blocks), SOUTHWESTERN BELL (5 blocks), T-MOBILE USA, INC. (2 blocks), ONVOY, LLC - MO (1 block), AIRESPRING, INC. (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is FARMINGTON 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 573

All 786 prefixes in 573