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

CUMBERLDGP prefixes in area code 423

NANPA records 5 assigned NXX blocks to rate center CUMBERLDGP in area code 423, 0.7% of the 764 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 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN (1), POWERTEL KENTUCKY LICENSES, INC. (1), NEW CINGULAR WIRELESS PCS, LLC - GA (1). The earliest assignment on record here is 2003-01-07 and the most recent 2012-02-21. 5 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 code 276 – overlay codes cover the same geography, so a rate center is served by all of them.

5 assigned blocks – 0.7% of 423
5 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
423-419 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 2012-02-21 yes yes
423-441 T-Mobile POWERTEL KENTUCKY LICENSES, INC. 2003-01-07 yes yes
423-489 AT&T NEW CINGULAR WIRELESS PCS, LLC - GA 2004-11-02 yes yes
423-801 UNITED STATES CELLULAR - TN 2007-12-19 yes yes
423-869 AT&T BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL – 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
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN Verizon 1 20%
POWERTEL KENTUCKY LICENSES, INC. T-Mobile 1 20%
NEW CINGULAR WIRELESS PCS, LLC - GA AT&T 1 20%
UNITED STATES CELLULAR - TN – 1 20%
BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL AT&T 1 20%

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 CUMBERLDGP in area code 423?

5 blocks: 419, 441, 489, 801, 869. The table above gives the holder of each.

Which carriers have numbers in CUMBERLDGP?

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN (1 block), POWERTEL KENTUCKY LICENSES, INC. (1 block), NEW CINGULAR WIRELESS PCS, LLC - GA (1 block), UNITED STATES CELLULAR - TN (1 block), BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is CUMBERLDGP 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 423

All 764 prefixes in 423