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

NEWTAZWELL prefixes in area code 423

NANPA records 6 assigned NXX blocks to rate center NEWTAZWELL in area code 423, 0.8% 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 BRIGHTSPEED OF EASTERN TENNESSEE, LLC (3), UNITED STATES CELLULAR - TN (1), CHARTER IP ENABLED SERVICES, LLC (1). The earliest assignment on record here is 2004-04-27 and the most recent 2025-11-18. 4 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

6 assigned blocks – 0.8% of 423
4 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
423-259 UNITED STATES CELLULAR - TN 2004-04-27 yes yes
423-526 Brightspeed BRIGHTSPEED OF EASTERN TENNESSEE, LLC – yes yes
423-626 Brightspeed BRIGHTSPEED OF EASTERN TENNESSEE, LLC – no yes
423-731 Charter CHARTER IP ENABLED SERVICES, LLC 2025-11-18 yes yes
423-851 Brightspeed BRIGHTSPEED OF EASTERN TENNESSEE, LLC – no yes
423-919 Onvoy ONVOY, LLC - TN 2019-10-01 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
BRIGHTSPEED OF EASTERN TENNESSEE, LLC Brightspeed 3 50%
UNITED STATES CELLULAR - TN – 1 16.7%
CHARTER IP ENABLED SERVICES, LLC Charter 1 16.7%
ONVOY, LLC - TN Onvoy 1 16.7%

Frequently asked

Which prefixes belong to NEWTAZWELL in area code 423?

6 blocks: 259, 526, 626, 731, 851, 919. The table above gives the holder of each.

Which carriers have numbers in NEWTAZWELL?

BRIGHTSPEED OF EASTERN TENNESSEE, LLC (3 blocks), UNITED STATES CELLULAR - TN (1 block), CHARTER IP ENABLED SERVICES, LLC (1 block), ONVOY, LLC - TN (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is NEWTAZWELL 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