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

WORLAND prefixes in area code 307

NANPA records 5 assigned NXX blocks to rate center WORLAND in area code 307, 1.0% 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. 4 holders hold those blocks, the largest being RT COMMUNICATIONS (2), NEW CINGULAR WIRELESS PCS, LLC (1), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY (1). The earliest assignment on record here is 2002-12-27 and the most recent 2002-12-27. 2 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

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

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
307-347 RT COMMUNICATIONS – no yes
307-375 RT COMMUNICATIONS – no yes
307-388 AT&T NEW CINGULAR WIRELESS PCS, LLC – yes yes
307-431 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY – yes yes
307-718 UNION TELEPHONE COMPANY 2002-12-27 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
RT COMMUNICATIONS – 2 40%
NEW CINGULAR WIRELESS PCS, LLC AT&T 1 20%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY Verizon 1 20%
UNION TELEPHONE COMPANY – 1 20%

Frequently asked

Which prefixes belong to WORLAND in area code 307?

5 blocks: 347, 375, 388, 431, 718. The table above gives the holder of each.

Which carriers have numbers in WORLAND?

RT COMMUNICATIONS (2 blocks), NEW CINGULAR WIRELESS PCS, LLC (1 block), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY (1 block), UNION TELEPHONE COMPANY (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is WORLAND 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