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

DUPREE prefixes in area code 605

NANPA records 4 assigned NXX blocks to rate center DUPREE in area code 605, 0.5% of the 745 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 NEW CINGULAR WIRELESS PCS, LLC - IL (2), CHEYENNE RIVER SIOUX TRIBAL TEL. AUTHORITY (2). The earliest assignment on record here is 2003-01-21 and the most recent 2010-11-11. 2 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

4 assigned blocks – 0.5% of 605
2 holders of record
2 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
605-200 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2003-01-21 yes yes
605-365 CHEYENNE RIVER SIOUX TRIBAL TEL. AUTHORITY – no yes
605-538 CHEYENNE RIVER SIOUX TRIBAL TEL. AUTHORITY – no yes
605-821 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2010-11-11 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
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 2 50%
CHEYENNE RIVER SIOUX TRIBAL TEL. AUTHORITY – 2 50%

Frequently asked

Which prefixes belong to DUPREE in area code 605?

4 blocks: 200, 365, 538, 821. The table above gives the holder of each.

Which carriers have numbers in DUPREE?

NEW CINGULAR WIRELESS PCS, LLC - IL (2 blocks), CHEYENNE RIVER SIOUX TRIBAL TEL. AUTHORITY (2 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is DUPREE 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 605

All 745 prefixes in 605