WINSLOW prefixes in area code 928
NANPA records 12 assigned NXX blocks to rate center WINSLOW in area code 928, 1.9% 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. 9 holders hold those blocks, the largest being QWEST CORPORATION (2), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ (2), BANDWIDTH.COM CLEC, LLC - AZ (2). The earliest assignment on record here is 2002-04-04 and the most recent 2026-10-26. 9 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 479, 779, 815 – overlay codes cover the same geography, so a rate center is served by all of them.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 928-224 | Lumen LEVEL 3 COMMUNICATIONS, LLC - AZ | 2002-04-04 | yes | yes |
| 928-288 | Lumen QWEST CORPORATION | – | yes | yes |
| 928-289 | Lumen QWEST CORPORATION | – | no | yes |
| 928-386 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | – | yes | yes |
| 928-406 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2021-05-18 | yes | yes |
| 928-421 | Bandwidth BANDWIDTH.COM CLEC, LLC - AZ | 2014-03-03 | yes | yes |
| 928-561 | IP HORIZON LLC | 2026-10-26 | yes | no |
| 928-585 | Onvoy ONVOY, LLC - AZ | – | no | yes |
| 928-587 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | – | no | yes |
| 928-589 | Allstream ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | – | yes | yes |
| 928-613 | SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA | – | yes | yes |
| 928-882 | Bandwidth BANDWIDTH.COM CLEC, LLC - AZ | 2017-05-15 | 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
| Holder | Brand | Blocks | Share here |
|---|---|---|---|
| QWEST CORPORATION | Lumen | 2 | 16.7% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | Verizon | 2 | 16.7% |
| BANDWIDTH.COM CLEC, LLC - AZ | Bandwidth | 2 | 16.7% |
| LEVEL 3 COMMUNICATIONS, LLC - AZ | Lumen | 1 | 8.3% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 1 | 8.3% |
| IP HORIZON LLC | – | 1 | 8.3% |
| ONVOY, LLC - AZ | Onvoy | 1 | 8.3% |
| ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | Allstream | 1 | 8.3% |
| SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA | – | 1 | 8.3% |
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 WINSLOW in area code 928?
12 blocks: 224, 288, 289, 386, 406, 421, 561, 585, 587, 589, 613, 882. The table above gives the holder of each.
Which carriers have numbers in WINSLOW?
QWEST CORPORATION (2 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ (2 blocks), BANDWIDTH.COM CLEC, LLC - AZ (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - AZ (1 block), NEW CINGULAR WIRELESS PCS, LLC (1 block), IP HORIZON LLC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is WINSLOW 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.