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

BAUXITE prefixes in area code 501

NANPA records 3 assigned NXX blocks to rate center BAUXITE in area code 501, 0.5% of the 631 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. 2 holders hold those blocks, the largest being SOUTHWESTERN BELL (2), ONVOY SPECTRUM, LLC (1). The earliest assignment on record here is 2021-06-07 and the most recent 2021-06-07. 3 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

3 assigned blocks – 0.5% of 501
2 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
501-461 Charter ONVOY SPECTRUM, LLC 2021-06-07 yes yes
501-557 AT&T SOUTHWESTERN BELL – yes yes
501-602 AT&T SOUTHWESTERN BELL – 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
SOUTHWESTERN BELL AT&T 2 66.7%
ONVOY SPECTRUM, LLC Charter 1 33.3%

Frequently asked

Which prefixes belong to BAUXITE in area code 501?

3 blocks: 461, 557, 602. The table above gives the holder of each.

Which carriers have numbers in BAUXITE?

SOUTHWESTERN BELL (2 blocks), 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 BAUXITE 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 501

All 631 prefixes in 501