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

ETOWAH prefixes in area code 423

NANPA records 5 assigned NXX blocks to rate center ETOWAH 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. 4 holders hold those blocks, the largest being ONVOY, LLC - TN (2), BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (1), LEVEL 3 COMMUNICATIONS, LLC - TN (1). The earliest assignment on record here is 2004-03-01 and the most recent 2022-01-20. 4 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

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

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
423-205 Onvoy ONVOY, LLC - TN 2016-03-09 yes yes
423-263 AT&T BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL – no yes
423-604 Onvoy ONVOY, LLC - TN – yes yes
423-781 Lumen LEVEL 3 COMMUNICATIONS, LLC - TN 2004-03-01 yes yes
423-932 TON80 COMMUNICATIONS, LLC 2022-01-20 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
ONVOY, LLC - TN Onvoy 2 40%
BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL AT&T 1 20%
LEVEL 3 COMMUNICATIONS, LLC - TN Lumen 1 20%
TON80 COMMUNICATIONS, LLC – 1 20%

Frequently asked

Which prefixes belong to ETOWAH in area code 423?

5 blocks: 205, 263, 604, 781, 932. The table above gives the holder of each.

Which carriers have numbers in ETOWAH?

ONVOY, LLC - TN (2 blocks), BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (1 block), LEVEL 3 COMMUNICATIONS, LLC - TN (1 block), TON80 COMMUNICATIONS, 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 ETOWAH 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