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

PHOENIX prefixes in area code 458

NANPA records 3 assigned NXX blocks to rate center PHOENIX in area code 458, 1.3% of the 225 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. 3 holders hold those blocks, the largest being CENTURYLINK COMMUNICATIONS, LLC (1), ONVOY, LLC - OR (1), FRACTEL, LLC (1). The earliest assignment on record here is 2014-04-18 and the most recent 2024-03-21. 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 315, 480, 541, 602 – overlay codes cover the same geography, so a rate center is served by all of them.

3 assigned blocks – 1.3% of 458
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
458-214 Lumen CENTURYLINK COMMUNICATIONS, LLC 2014-04-18 yes yes
458-321 Onvoy ONVOY, LLC - OR 2024-03-21 yes yes
458-529 FRACTEL, LLC 2020-07-28 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
CENTURYLINK COMMUNICATIONS, LLC Lumen 1 33.3%
ONVOY, LLC - OR Onvoy 1 33.3%
FRACTEL, LLC – 1 33.3%

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 PHOENIX in area code 458?

3 blocks: 214, 321, 529. The table above gives the holder of each.

Which carriers have numbers in PHOENIX?

CENTURYLINK COMMUNICATIONS, LLC (1 block), ONVOY, LLC - OR (1 block), FRACTEL, 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 PHOENIX 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 458

All 225 prefixes in 458