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

ST HELENA prefixes in area code 843

NANPA records 5 assigned NXX blocks to rate center ST HELENA in area code 843, 0.6% of the 783 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 LEVEL 3 COMMUNICATIONS, LLC - SC (2), HARGRAY, INC. - SC (1), COMCAST IP PHONE, LLC (1). 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 code 707 – overlay codes cover the same geography, so a rate center is served by all of them.

5 assigned blocks – 0.6% of 843
4 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
843-502 Lumen LEVEL 3 COMMUNICATIONS, LLC - SC – yes yes
843-541 HARGRAY, INC. - SC – no yes
843-612 Comcast COMCAST IP PHONE, LLC – yes yes
843-776 Lumen LEVEL 3 COMMUNICATIONS, LLC - SC – yes yes
843-838 Brightspeed BRIGHTSPEED OF SOUTH CAROLINA, LLC – no 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
LEVEL 3 COMMUNICATIONS, LLC - SC Lumen 2 40%
HARGRAY, INC. - SC – 1 20%
COMCAST IP PHONE, LLC Comcast 1 20%
BRIGHTSPEED OF SOUTH CAROLINA, LLC Brightspeed 1 20%

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 ST HELENA in area code 843?

5 blocks: 502, 541, 612, 776, 838. The table above gives the holder of each.

Which carriers have numbers in ST HELENA?

LEVEL 3 COMMUNICATIONS, LLC - SC (2 blocks), HARGRAY, INC. - SC (1 block), COMCAST IP PHONE, LLC (1 block), BRIGHTSPEED OF SOUTH CAROLINA, 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 ST HELENA 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 843

All 783 prefixes in 843