FLAGSTAFF prefixes in area code 928
NANPA records 63 assigned NXX blocks to rate center FLAGSTAFF in area code 928, 9.9% 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. 15 holders hold those blocks, the largest being QWEST CORPORATION (19), ONVOY, LLC - AZ (13), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ (9). The earliest assignment on record here is 2001-02-28 and the most recent 2025-10-10. 34 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 code 520 – 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 |
|---|---|---|---|---|
| 928-213 | Lumen QWEST CORPORATION | – | no | yes |
| 928-214 | Lumen QWEST CORPORATION | – | no | yes |
| 928-220 | T-Mobile METROPCS, INC. | – | yes | yes |
| 928-221 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | yes | yes |
| 928-222 | Onvoy ONVOY, LLC - AZ | – | no | yes |
| 928-223 | Onvoy ONVOY, LLC - AZ | – | no | yes |
| 928-225 | T-Mobile T-MOBILE USA, INC. | 2002-01-31 | yes | yes |
| 928-226 | Lumen QWEST CORPORATION | – | no | yes |
| 928-233 | Allstream ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | – | yes | yes |
| 928-255 | Lumen LEVEL 3 COMMUNICATIONS, LLC - AZ | – | yes | yes |
| 928-266 | CSC VOICE, LLC | – | yes | yes |
| 928-268 | Onvoy ONVOY, LLC - AZ | – | no | yes |
| 928-286 | Lumen QWEST CORPORATION | – | yes | yes |
| 928-310 | T-Mobile T-MOBILE USA, INC. | 2004-09-22 | yes | yes |
| 928-326 | SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA | 2016-04-21 | yes | yes |
| 928-380 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 928-395 | Onvoy ONVOY, LLC - AZ | – | no | yes |
| 928-396 | Onvoy ONVOY, LLC - AZ | – | no | yes |
| 928-405 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2021-05-04 | yes | yes |
| 928-419 | CSC WIRELESS, LLC | 2019-03-27 | yes | yes |
| 928-423 | Lumen LEVEL 3 COMMUNICATIONS, LLC - AZ | 2021-08-23 | yes | yes |
| 928-433 | Allstream ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | – | yes | yes |
| 928-438 | Onvoy ONVOY, LLC - AZ | 2001-03-27 | yes | yes |
| 928-440 | CSC VOICE, LLC | 2013-11-05 | yes | yes |
| 928-447 | Onvoy ONVOY, LLC - AZ | – | no | yes |
| 928-456 | COMMIO, LLC | 2021-09-24 | yes | yes |
| 928-522 | Lumen QWEST CORPORATION | – | yes | yes |
| 928-523 | Lumen QWEST CORPORATION | – | no | yes |
| 928-525 | Lumen QWEST CORPORATION | – | yes | yes |
| 928-526 | Lumen QWEST CORPORATION | – | no | yes |
| 928-527 | Lumen QWEST CORPORATION | – | no | yes |
| 928-547 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 2024-06-05 | yes | yes |
| 928-549 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 2025-10-10 | yes | yes |
| 928-556 | Lumen QWEST CORPORATION | – | no | yes |
| 928-563 | Onvoy ONVOY, LLC - AZ | – | no | yes |
| 928-569 | Onvoy ONVOY, LLC - AZ | – | no | yes |
| 928-600 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 928-606 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | – | no | yes |
| 928-607 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | – | no | yes |
| 928-622 | TON80 COMMUNICATIONS, LLC | 2022-02-17 | yes | yes |
| 928-635 | Lumen QWEST CORPORATION | – | yes | yes |
| 928-637 | Lumen QWEST CORPORATION | – | yes | yes |
| 928-666 | FRACTEL, LLC | 2019-01-25 | yes | yes |
| 928-679 | Lumen QWEST CORPORATION | – | yes | yes |
| 928-699 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | – | no | yes |
| 928-707 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | – | yes | yes |
| 928-714 | Lumen QWEST CORPORATION | – | yes | yes |
| 928-752 | Allstream ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | – | no | yes |
| 928-773 | Lumen QWEST CORPORATION | – | no | yes |
| 928-774 | Lumen QWEST CORPORATION | – | no | yes |
| 928-779 | Lumen QWEST CORPORATION | – | no | yes |
| 928-789 | NORTH COUNTY COMMUNICATIONS CORPORATION | – | no | yes |
| 928-814 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2001-09-04 | yes | yes |
| 928-832 | Onvoy ONVOY, LLC - AZ | – | no | yes |
| 928-833 | Onvoy ONVOY, LLC - AZ | – | no | yes |
| 928-853 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | – | no | yes |
| 928-856 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | – | yes | yes |
| 928-863 | T-Mobile T-MOBILE USA, INC. | 2002-08-28 | yes | yes |
| 928-864 | Lumen QWEST CORPORATION | 2001-02-28 | yes | yes |
| 928-890 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | – | yes | yes |
| 928-913 | Lumen QWEST CORPORATION | – | no | yes |
| 928-962 | Onvoy ONVOY, LLC - AZ | – | no | yes |
| 928-981 | Onvoy ONVOY, LLC - AZ | 2020-12-08 | 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 | 19 | 30.2% |
| ONVOY, LLC - AZ | Onvoy | 13 | 20.6% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | Verizon | 9 | 14.3% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 4 | 6.3% |
| T-MOBILE USA, INC. | T-Mobile | 4 | 6.3% |
| ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | Allstream | 3 | 4.8% |
| LEVEL 3 COMMUNICATIONS, LLC - AZ | Lumen | 2 | 3.2% |
| CSC VOICE, LLC | – | 2 | 3.2% |
| METROPCS, INC. | T-Mobile | 1 | 1.6% |
| SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA | – | 1 | 1.6% |
| CSC WIRELESS, LLC | – | 1 | 1.6% |
| COMMIO, LLC | – | 1 | 1.6% |
| TON80 COMMUNICATIONS, LLC | – | 1 | 1.6% |
| FRACTEL, LLC | – | 1 | 1.6% |
| NORTH COUNTY COMMUNICATIONS CORPORATION | – | 1 | 1.6% |
Frequently asked
Which prefixes belong to FLAGSTAFF in area code 928?
63 blocks: 213, 214, 220, 221, 222, 223, 225, 226, 233, 255, 266, 268 and 51 more, all listed in the table above.
Which carriers have numbers in FLAGSTAFF?
QWEST CORPORATION (19 blocks), ONVOY, LLC - AZ (13 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ (9 blocks), NEW CINGULAR WIRELESS PCS, LLC (4 blocks), T-MOBILE USA, INC. (4 blocks), ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM (3 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is FLAGSTAFF 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.