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

SHOW LOW prefixes in area code 928

NANPA records 11 assigned NXX blocks to rate center SHOW LOW in area code 928, 1.7% of the 637 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 SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA (6), CITIZENS TELECOM CO OF WHITE MOUNTAINS INC. (3), LEVEL 3 COMMUNICATIONS, LLC - AZ (1). The earliest assignment on record here is 2001-03-08 and the most recent 2006-10-05. 3 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

11 assigned blocks – 1.7% of 928
4 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
928-205 SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA 2002-10-30 no yes
928-207 SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA 2002-10-30 no yes
928-251 Lumen LEVEL 3 COMMUNICATIONS, LLC - AZ 2006-10-05 yes yes
928-306 SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA 2001-03-08 no yes
928-434 SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA 2005-03-29 no yes
928-521 SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA – no yes
928-528 SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA – no yes
928-532 CITIZENS TELECOM CO OF WHITE MOUNTAINS INC. – no yes
928-537 CITIZENS TELECOM CO OF WHITE MOUNTAINS INC. – no yes
928-739 CITIZENS TELECOM CO OF WHITE MOUNTAINS INC. – yes yes
928-892 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ – 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
SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA – 6 54.5%
CITIZENS TELECOM CO OF WHITE MOUNTAINS INC. – 3 27.3%
LEVEL 3 COMMUNICATIONS, LLC - AZ Lumen 1 9.1%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ Verizon 1 9.1%

Frequently asked

Which prefixes belong to SHOW LOW in area code 928?

11 blocks: 205, 207, 251, 306, 434, 521, 528, 532, 537, 739, 892. The table above gives the holder of each.

Which carriers have numbers in SHOW LOW?

SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA (6 blocks), CITIZENS TELECOM CO OF WHITE MOUNTAINS INC. (3 blocks), LEVEL 3 COMMUNICATIONS, LLC - AZ (1 block), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is SHOW LOW 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 928

All 637 prefixes in 928