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

DECATUR prefixes in area code 423

NANPA records 4 assigned NXX blocks to rate center DECATUR in area code 423, 0.5% 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. 4 holders hold those blocks, the largest being BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (1), LEVEL 3 COMMUNICATIONS, LLC - TN (1), BANDWIDTH.COM CLEC, LLC - TN (1). The earliest assignment on record here is 2004-10-26 and the most recent 2023-05-18. 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 217, 256, 260, 269 – overlay codes cover the same geography, so a rate center is served by all of them.

4 assigned blocks – 0.5% of 423
4 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
423-334 AT&T BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL – yes yes
423-454 Lumen LEVEL 3 COMMUNICATIONS, LLC - TN 2004-10-26 yes yes
423-565 Bandwidth BANDWIDTH.COM CLEC, LLC - TN 2018-08-30 yes yes
423-864 Charter ONVOY SPECTRUM, LLC 2023-05-18 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
BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL AT&T 1 25%
LEVEL 3 COMMUNICATIONS, LLC - TN Lumen 1 25%
BANDWIDTH.COM CLEC, LLC - TN Bandwidth 1 25%
ONVOY SPECTRUM, LLC Charter 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 DECATUR in area code 423?

4 blocks: 334, 454, 565, 864. The table above gives the holder of each.

Which carriers have numbers in DECATUR?

BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (1 block), LEVEL 3 COMMUNICATIONS, LLC - TN (1 block), BANDWIDTH.COM CLEC, LLC - TN (1 block), ONVOY SPECTRUM, 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 DECATUR 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