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

FARSON prefixes in area code 307

NANPA records 3 assigned NXX blocks to rate center FARSON in area code 307, 0.6% 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. 3 holders hold those blocks, the largest being CENTURYTEL OF WYOMING, INC. DBA CENTURYLINK (1), UNION TELEPHONE COMPANY (1), ALL WEST/WYOMING, INC. (1). The earliest assignment on record here is 2020-05-07 and the most recent 2020-05-07. 2 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 code 641 – overlay codes cover the same geography, so a rate center is served by all of them.

3 assigned blocks – 0.6% of 307
3 holders of record
2 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
307-273 Lumen CENTURYTEL OF WYOMING, INC. DBA CENTURYLINK – yes yes
307-280 UNION TELEPHONE COMPANY – no yes
307-770 ALL WEST/WYOMING, INC. 2020-05-07 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
CENTURYTEL OF WYOMING, INC. DBA CENTURYLINK Lumen 1 33.3%
UNION TELEPHONE COMPANY – 1 33.3%
ALL WEST/WYOMING, INC. – 1 33.3%

Frequently asked

Which prefixes belong to FARSON in area code 307?

3 blocks: 273, 280, 770. The table above gives the holder of each.

Which carriers have numbers in FARSON?

CENTURYTEL OF WYOMING, INC. DBA CENTURYLINK (1 block), UNION TELEPHONE COMPANY (1 block), ALL WEST/WYOMING, 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 FARSON 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