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

POWELL prefixes in area code 307

NANPA records 10 assigned NXX blocks to rate center POWELL in area code 307, 2.0% of the 499 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. 9 holders hold those blocks, the largest being ONVOY, LLC - WY (2), NEW CINGULAR WIRELESS PCS, LLC (1), CENTURYLINK COMMUNICATIONS, LLC (1). The earliest assignment on record here is 2002-12-27 and the most recent 2025-02-12. 7 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 208, 417, 865, 986 – overlay codes cover the same geography, so a rate center is served by all of them.

10 assigned blocks – 2% of 307
9 holders of record
7 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
307-202 AT&T NEW CINGULAR WIRELESS PCS, LLC 2003-01-21 yes yes
307-219 Lumen CENTURYLINK COMMUNICATIONS, LLC 2015-03-26 yes yes
307-254 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 2003-09-11 yes yes
307-271 Lumen LEVEL 3 COMMUNICATIONS, LLC - WY 2004-05-26 yes yes
307-300 Onvoy ONVOY, LLC - WY 2019-10-10 yes yes
307-410 T-Mobile T-MOBILE USA, INC. 2022-03-22 yes yes
307-479 Onvoy ONVOY, LLC - WY 2025-02-12 yes yes
307-716 UNION TELEPHONE COMPANY 2002-12-27 no yes
307-754 Lumen QWEST CORPORATION – no yes
307-764 TRI TEL, INC. 2005-04-01 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
ONVOY, LLC - WY Onvoy 2 20%
NEW CINGULAR WIRELESS PCS, LLC AT&T 1 10%
CENTURYLINK COMMUNICATIONS, LLC Lumen 1 10%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY Verizon 1 10%
LEVEL 3 COMMUNICATIONS, LLC - WY Lumen 1 10%
T-MOBILE USA, INC. T-Mobile 1 10%
UNION TELEPHONE COMPANY – 1 10%
QWEST CORPORATION Lumen 1 10%
TRI TEL, INC. – 1 10%

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 POWELL in area code 307?

10 blocks: 202, 219, 254, 271, 300, 410, 479, 716, 754, 764. The table above gives the holder of each.

Which carriers have numbers in POWELL?

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

Is POWELL 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 307

All 499 prefixes in 307