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

WALTERBORO prefixes in area code 854

NANPA records 4 assigned NXX blocks to rate center WALTERBORO in area code 854, 2.2% of the 182 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 TELEPORT COMMUNICATIONS AMERICA SC- LLC (1), BANDWIDTH.COM CLEC, LLC - SC (1), ONVOY, LLC - SC (1). The earliest assignment on record here is 2017-03-08 and the most recent 2021-12-22. 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 code 843 – overlay codes cover the same geography, so a rate center is served by all of them.

4 assigned blocks – 2.2% of 854
4 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
854-201 AT&T TELEPORT COMMUNICATIONS AMERICA SC- LLC 2019-01-03 yes yes
854-229 Bandwidth BANDWIDTH.COM CLEC, LLC - SC 2021-12-22 yes yes
854-254 Onvoy ONVOY, LLC - SC 2021-01-06 yes yes
854-333 Telnyx TELNYX LLC 2017-03-08 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
TELEPORT COMMUNICATIONS AMERICA SC- LLC AT&T 1 25%
BANDWIDTH.COM CLEC, LLC - SC Bandwidth 1 25%
ONVOY, LLC - SC Onvoy 1 25%
TELNYX LLC Telnyx 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 WALTERBORO in area code 854?

4 blocks: 201, 229, 254, 333. The table above gives the holder of each.

Which carriers have numbers in WALTERBORO?

TELEPORT COMMUNICATIONS AMERICA SC- LLC (1 block), BANDWIDTH.COM CLEC, LLC - SC (1 block), ONVOY, LLC - SC (1 block), TELNYX 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 WALTERBORO 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 854

All 182 prefixes in 854