CASAGRANDE prefixes in area code 520
NANPA records 67 assigned NXX blocks to rate center CASAGRANDE in area code 520, 9.6% of the 699 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. 13 holders hold those blocks, the largest being T-MOBILE USA, INC. (18), QWEST CORPORATION (18), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ (8). The earliest assignment on record here is 2001-01-08 and the most recent 2026-04-03. 55 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 520-208 | Lumen LEVEL 3 COMMUNICATIONS, LLC - AZ | 2001-01-08 | yes | yes |
| 520-213 | T-Mobile T-MOBILE USA, INC. | 2013-06-25 | yes | yes |
| 520-217 | Lumen QWEST CORPORATION | 2015-12-29 | yes | yes |
| 520-233 | Onvoy ONVOY, LLC - AZ | – | yes | yes |
| 520-251 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 520-252 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 520-280 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 520-316 | Lumen QWEST CORPORATION | – | no | yes |
| 520-340 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 2016-09-01 | yes | yes |
| 520-350 | GILA LOCAL EXCHANGE CARRIER, INC. - AZ | 2008-05-14 | yes | yes |
| 520-371 | T-Mobile METROPCS, INC. | – | yes | yes |
| 520-374 | Lumen QWEST CORPORATION | – | no | yes |
| 520-380 | T-Mobile T-MOBILE USA, INC. | 2019-08-23 | yes | yes |
| 520-381 | Allstream ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | – | yes | yes |
| 520-413 | Lumen LEVEL 3 COMMUNICATIONS, LLC - AZ | 2001-04-16 | yes | yes |
| 520-414 | Lumen LEVEL 3 COMMUNICATIONS, LLC - AZ | 2001-04-16 | yes | yes |
| 520-421 | Lumen QWEST CORPORATION | – | no | yes |
| 520-423 | Lumen QWEST CORPORATION | – | yes | yes |
| 520-424 | Lumen QWEST CORPORATION | – | yes | yes |
| 520-426 | Lumen QWEST CORPORATION | – | no | yes |
| 520-431 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | yes | yes |
| 520-450 | T-Mobile T-MOBILE USA, INC. | – | yes | yes |
| 520-464 | Lumen QWEST CORPORATION | – | yes | yes |
| 520-466 | Lumen QWEST CORPORATION | – | no | yes |
| 520-472 | Lumen QWEST CORPORATION | 2019-08-26 | yes | yes |
| 520-483 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | – | yes | yes |
| 520-494 | Lumen QWEST CORPORATION | – | yes | yes |
| 520-509 | Lumen LEVEL 3 COMMUNICATIONS, LLC - AZ | 2001-05-15 | yes | yes |
| 520-510 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | yes | yes |
| 520-518 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | yes | yes |
| 520-532 | Onvoy ONVOY, LLC - AZ | 2020-12-23 | yes | yes |
| 520-553 | T-Mobile T-MOBILE USA, INC. | 2021-07-19 | yes | yes |
| 520-557 | COMMIO, LLC | 2022-11-04 | yes | yes |
| 520-560 | AT&T NEW CINGULAR WIRELESS PCS, LLC | – | no | yes |
| 520-568 | Lumen QWEST CORPORATION | – | no | yes |
| 520-582 | Lumen LEVEL 3 TELECOM OF ARIZONA, LLC - AZ | – | yes | yes |
| 520-598 | T-Mobile METROPCS, INC. | 2021-10-11 | yes | yes |
| 520-607 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2021-12-17 | yes | yes |
| 520-632 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 2021-12-15 | yes | yes |
| 520-634 | T-Mobile T-MOBILE USA, INC. | 2022-03-10 | yes | yes |
| 520-635 | T-Mobile T-MOBILE USA, INC. | 2015-04-07 | yes | yes |
| 520-637 | T-Mobile T-MOBILE USA, INC. | 2020-12-23 | yes | yes |
| 520-660 | T-Mobile T-MOBILE USA, INC. | 2022-09-20 | yes | yes |
| 520-666 | Onvoy ONVOY, LLC - AZ | 2017-09-12 | yes | yes |
| 520-677 | Dish BOOST SUBSCRIBERCO L.L.C. | 2023-04-18 | yes | yes |
| 520-683 | Onvoy ONVOY, LLC - AZ | 2023-08-11 | yes | yes |
| 520-688 | FRACTEL, LLC | 2021-09-15 | yes | yes |
| 520-701 | T-Mobile T-MOBILE USA, INC. | 2023-11-09 | yes | yes |
| 520-705 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | – | no | yes |
| 520-709 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | – | yes | yes |
| 520-723 | Lumen QWEST CORPORATION | – | no | yes |
| 520-728 | T-Mobile T-MOBILE USA, INC. | 2024-02-16 | yes | yes |
| 520-736 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2024-06-13 | yes | yes |
| 520-752 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 2025-01-08 | yes | yes |
| 520-757 | T-Mobile T-MOBILE USA, INC. | 2025-03-25 | yes | yes |
| 520-759 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 2018-09-10 | yes | yes |
| 520-763 | T-Mobile T-MOBILE USA, INC. | 2025-07-11 | yes | yes |
| 520-764 | T-Mobile T-MOBILE USA, INC. | 2025-10-28 | yes | yes |
| 520-765 | T-Mobile T-MOBILE USA, INC. | 2026-01-09 | yes | yes |
| 520-767 | AT&T NEW CINGULAR WIRELESS PCS, LLC | 2026-04-03 | yes | yes |
| 520-788 | T-Mobile T-MOBILE USA, INC. | 2014-09-22 | yes | yes |
| 520-836 | Lumen QWEST CORPORATION | – | no | yes |
| 520-840 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | – | yes | yes |
| 520-858 | Lumen QWEST CORPORATION | 2007-11-07 | yes | yes |
| 520-866 | Lumen QWEST CORPORATION | 2001-08-17 | yes | yes |
| 520-868 | Lumen QWEST CORPORATION | – | no | yes |
| 520-876 | Lumen QWEST CORPORATION | – | 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
| Holder | Brand | Blocks | Share here |
|---|---|---|---|
| T-MOBILE USA, INC. | T-Mobile | 18 | 26.9% |
| QWEST CORPORATION | Lumen | 18 | 26.9% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | Verizon | 8 | 11.9% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 7 | 10.4% |
| LEVEL 3 COMMUNICATIONS, LLC - AZ | Lumen | 4 | 6% |
| ONVOY, LLC - AZ | Onvoy | 4 | 6% |
| METROPCS, INC. | T-Mobile | 2 | 3% |
| GILA LOCAL EXCHANGE CARRIER, INC. - AZ | – | 1 | 1.5% |
| ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | Allstream | 1 | 1.5% |
| COMMIO, LLC | – | 1 | 1.5% |
| LEVEL 3 TELECOM OF ARIZONA, LLC - AZ | Lumen | 1 | 1.5% |
| BOOST SUBSCRIBERCO L.L.C. | Dish | 1 | 1.5% |
| FRACTEL, LLC | – | 1 | 1.5% |
Frequently asked
Which prefixes belong to CASAGRANDE in area code 520?
67 blocks: 208, 213, 217, 233, 251, 252, 280, 316, 340, 350, 371, 374 and 55 more, all listed in the table above.
Which carriers have numbers in CASAGRANDE?
T-MOBILE USA, INC. (18 blocks), QWEST CORPORATION (18 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ (8 blocks), NEW CINGULAR WIRELESS PCS, LLC (7 blocks), LEVEL 3 COMMUNICATIONS, LLC - AZ (4 blocks), ONVOY, LLC - AZ (4 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is CASAGRANDE 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.