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

KETCHUM prefixes in area code 208

NANPA records 15 assigned NXX blocks to rate center KETCHUM in area code 208, 1.9% of the 785 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. 6 holders hold those blocks, the largest being QWEST CORPORATION (6), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID (3), T-MOBILE USA, INC. (2). The earliest assignment on record here is 2001-03-21 and the most recent 2018-03-20. 12 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 codes 539, 918, 986 – overlay codes cover the same geography, so a rate center is served by all of them.

15 assigned blocks – 1.9% of 208
6 holders of record
12 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
208-309 AT&T NEW CINGULAR WIRELESS PCS, LLC – yes yes
208-450 T-Mobile T-MOBILE USA, INC. 2001-03-21 yes yes
208-471 T-Mobile T-MOBILE USA, INC. – yes yes
208-481 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID – yes yes
208-578 Lumen QWEST CORPORATION – yes yes
208-622 Lumen QWEST CORPORATION – no yes
208-720 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID – yes yes
208-721 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID – yes yes
208-725 Lumen QWEST CORPORATION – yes yes
208-726 Lumen QWEST CORPORATION – no yes
208-727 Lumen QWEST CORPORATION – yes yes
208-788 Lumen QWEST CORPORATION – no yes
208-806 Lumen LEVEL 3 COMMUNICATIONS, LLC - ID 2002-06-19 yes yes
208-913 Comcast COMCAST IP PHONE, LLC 2018-03-20 yes yes
208-928 Comcast COMCAST IP PHONE, LLC – 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
QWEST CORPORATION Lumen 6 40%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID Verizon 3 20%
T-MOBILE USA, INC. T-Mobile 2 13.3%
COMCAST IP PHONE, LLC Comcast 2 13.3%
NEW CINGULAR WIRELESS PCS, LLC AT&T 1 6.7%
LEVEL 3 COMMUNICATIONS, LLC - ID Lumen 1 6.7%

Frequently asked

Which prefixes belong to KETCHUM in area code 208?

15 blocks: 309, 450, 471, 481, 578, 622, 720, 721, 725, 726, 727, 788 and 3 more, all listed in the table above.

Which carriers have numbers in KETCHUM?

QWEST CORPORATION (6 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID (3 blocks), T-MOBILE USA, INC. (2 blocks), COMCAST IP PHONE, LLC (2 blocks), NEW CINGULAR WIRELESS PCS, LLC (1 block), LEVEL 3 COMMUNICATIONS, LLC - ID (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is KETCHUM 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 208

All 785 prefixes in 208