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

CHAMBERLAN prefixes in area code 605

NANPA records 5 assigned NXX blocks to rate center CHAMBERLAN in area code 605, 0.7% 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. 5 holders hold those blocks, the largest being MIDSTATE TELECOM, INC. - SD (1), NEW CINGULAR WIRELESS PCS, LLC - IL (1), QWEST CORPORATION (1). The earliest assignment on record here is 2001-10-17 and the most recent 2019-05-07. 4 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

5 assigned blocks – 0.7% of 605
5 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
605-234 MIDSTATE TELECOM, INC. - SD 2001-10-17 no yes
605-730 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
605-734 Lumen QWEST CORPORATION – yes yes
605-815 AIRUS, INC. - SD 2019-05-07 yes yes
605-888 Onvoy ONVOY, LLC - SD 2012-11-19 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
MIDSTATE TELECOM, INC. - SD – 1 20%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 1 20%
QWEST CORPORATION Lumen 1 20%
AIRUS, INC. - SD – 1 20%
ONVOY, LLC - SD Onvoy 1 20%

Frequently asked

Which prefixes belong to CHAMBERLAN in area code 605?

5 blocks: 234, 730, 734, 815, 888. The table above gives the holder of each.

Which carriers have numbers in CHAMBERLAN?

MIDSTATE TELECOM, INC. - SD (1 block), NEW CINGULAR WIRELESS PCS, LLC - IL (1 block), QWEST CORPORATION (1 block), AIRUS, INC. - SD (1 block), ONVOY, LLC - SD (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is CHAMBERLAN 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