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

CLIFTON prefixes in area code 928

NANPA records 4 assigned NXX blocks to rate center CLIFTON in area code 928, 0.6% 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. 3 holders hold those blocks, the largest being CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ (2), NEW CINGULAR WIRELESS PCS, LLC (1), VALLEY TEL COOP INC (1). The earliest assignment on record here is 2003-04-03 and the most recent 2023-09-29. 3 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 254, 785, 815, 931 – overlay codes cover the same geography, so a rate center is served by all of them.

4 assigned blocks – 0.6% of 928
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
928-215 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 2003-04-03 yes yes
928-292 AT&T NEW CINGULAR WIRELESS PCS, LLC 2006-02-16 yes yes
928-513 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 2023-09-29 yes yes
928-865 VALLEY TEL COOP INC – 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 - AZ Verizon 2 50%
NEW CINGULAR WIRELESS PCS, LLC AT&T 1 25%
VALLEY TEL COOP INC – 1 25%

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 CLIFTON in area code 928?

4 blocks: 215, 292, 513, 865. The table above gives the holder of each.

Which carriers have numbers in CLIFTON?

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ (2 blocks), NEW CINGULAR WIRELESS PCS, LLC (1 block), VALLEY TEL COOP 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 CLIFTON 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