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

FORT MILL prefixes in area code 803

NANPA records 9 assigned NXX blocks to rate center FORT MILL in area code 803, 1.1% of the 784 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 FORT MILL TEL. CO. (6), METROPCS, INC. (2), TWC IP ENABLED SERVICES, LLC (1). The earliest assignment on record here is 2004-02-20 and the most recent 2017-01-04. 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 839 – overlay codes cover the same geography, so a rate center is served by all of them.

9 assigned blocks – 1.1% of 803
3 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
803-228 Charter TWC IP ENABLED SERVICES, LLC – yes yes
803-396 FORT MILL TEL. CO. – no yes
803-431 T-Mobile METROPCS, INC. – yes yes
803-547 FORT MILL TEL. CO. – no yes
803-548 FORT MILL TEL. CO. – no yes
803-578 FORT MILL TEL. CO. 2007-01-29 yes yes
803-650 T-Mobile METROPCS, INC. 2017-01-04 yes yes
803-802 FORT MILL TEL. CO. – no yes
803-835 FORT MILL TEL. CO. 2004-02-20 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
FORT MILL TEL. CO. – 6 66.7%
METROPCS, INC. T-Mobile 2 22.2%
TWC IP ENABLED SERVICES, LLC Charter 1 11.1%

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 FORT MILL in area code 803?

9 blocks: 228, 396, 431, 547, 548, 578, 650, 802, 835. The table above gives the holder of each.

Which carriers have numbers in FORT MILL?

FORT MILL TEL. CO. (6 blocks), METROPCS, INC. (2 blocks), TWC IP ENABLED SERVICES, 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 FORT MILL 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 803

All 784 prefixes in 803