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

AFTON prefixes in area code 307

NANPA records 8 assigned NXX blocks to rate center AFTON in area code 307, 1.6% 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. 7 holders hold those blocks, the largest being CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY (2), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (1), COMMIO, LLC (1). The earliest assignment on record here is 2003-03-25 and the most recent 2021-11-03. 5 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, 607, 641, 806 – overlay codes cover the same geography, so a rate center is served by all of them.

8 assigned blocks – 1.6% of 307
7 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
307-226 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC 2015-12-28 yes yes
307-248 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 2003-03-25 yes yes
307-368 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 2021-02-10 yes yes
307-384 COMMIO, LLC 2021-11-03 yes yes
307-884 UNION TELEPHONE COMPANY – no yes
307-885 SILVER STAR TEL CO INC – no yes
307-886 Lumen QWEST CORPORATION – yes yes
307-887 GOLD STAR COMMUNICATIONS, LLC 2005-06-22 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
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY Verizon 2 25%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 1 12.5%
COMMIO, LLC – 1 12.5%
UNION TELEPHONE COMPANY – 1 12.5%
SILVER STAR TEL CO INC – 1 12.5%
QWEST CORPORATION Lumen 1 12.5%
GOLD STAR COMMUNICATIONS, LLC – 1 12.5%

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 AFTON in area code 307?

8 blocks: 226, 248, 368, 384, 884, 885, 886, 887. The table above gives the holder of each.

Which carriers have numbers in AFTON?

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY (2 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (1 block), COMMIO, LLC (1 block), UNION TELEPHONE COMPANY (1 block), SILVER STAR TEL CO INC (1 block), QWEST CORPORATION (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is AFTON 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