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

MONTEREY prefixes in area code 931

NANPA records 4 assigned NXX blocks to rate center MONTEREY in area code 931, 0.7% of the 538 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. 4 holders hold those blocks, the largest being NEW CINGULAR WIRELESS PCS, LLC - GA (1), ONVOY SPECTRUM, LLC (1), POWERTEL NASHVILLE LICENSES, INC. (1). The earliest assignment on record here is 2004-12-16 and the most recent 2024-04-18. 3 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 318, 540, 574, 831 – overlay codes cover the same geography, so a rate center is served by all of them.

4 assigned blocks – 0.7% of 931
4 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
931-322 AT&T NEW CINGULAR WIRELESS PCS, LLC - GA 2010-07-06 yes yes
931-420 Charter ONVOY SPECTRUM, LLC 2024-04-18 yes yes
931-584 T-Mobile POWERTEL NASHVILLE LICENSES, INC. 2004-12-16 yes yes
931-839 Frontier CITIZENS COMM CO TN DBA FRONTIER COMM OF TN, LLC – no 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 - GA AT&T 1 25%
ONVOY SPECTRUM, LLC Charter 1 25%
POWERTEL NASHVILLE LICENSES, INC. T-Mobile 1 25%
CITIZENS COMM CO TN DBA FRONTIER COMM OF TN, LLC Frontier 1 25%

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 MONTEREY in area code 931?

4 blocks: 322, 420, 584, 839. The table above gives the holder of each.

Which carriers have numbers in MONTEREY?

NEW CINGULAR WIRELESS PCS, LLC - GA (1 block), ONVOY SPECTRUM, LLC (1 block), POWERTEL NASHVILLE LICENSES, INC. (1 block), CITIZENS COMM CO TN DBA FRONTIER COMM OF TN, 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 MONTEREY 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 931

All 538 prefixes in 931