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

BIG PINEY prefixes in area code 307

NANPA records 4 assigned NXX blocks to rate center BIG PINEY in area code 307, 0.8% 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. 4 holders hold those blocks, the largest being UNION TELEPHONE COMPANY (1), CENTURYTEL OF WYOMING, INC. DBA CENTURYLINK (1), TELEPORT COMMUNICATIONS AMERICA WY-LLC (1). The earliest assignment on record here is 2019-07-22 and the most recent 2023-08-01. 3 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

4 assigned blocks – 0.8% of 307
4 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
307-260 UNION TELEPHONE COMPANY – no yes
307-276 Lumen CENTURYTEL OF WYOMING, INC. DBA CENTURYLINK – yes yes
307-294 AT&T TELEPORT COMMUNICATIONS AMERICA WY-LLC 2023-08-01 yes yes
307-456 Lumen LEVEL 3 COMMUNICATIONS, LLC - WY 2019-07-22 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
UNION TELEPHONE COMPANY – 1 25%
CENTURYTEL OF WYOMING, INC. DBA CENTURYLINK Lumen 1 25%
TELEPORT COMMUNICATIONS AMERICA WY-LLC AT&T 1 25%
LEVEL 3 COMMUNICATIONS, LLC - WY Lumen 1 25%

Frequently asked

Which prefixes belong to BIG PINEY in area code 307?

4 blocks: 260, 276, 294, 456. The table above gives the holder of each.

Which carriers have numbers in BIG PINEY?

UNION TELEPHONE COMPANY (1 block), CENTURYTEL OF WYOMING, INC. DBA CENTURYLINK (1 block), TELEPORT COMMUNICATIONS AMERICA WY-LLC (1 block), LEVEL 3 COMMUNICATIONS, LLC - WY (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is BIG PINEY 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