Prefixes in 520-4xx
| Prefix | County | City | State | Zip Code | Carrier |
|---|---|---|---|---|---|
| 520-400 | Pima | Tucson | AZ | 85701 | Cellco Partnership DBA Verizon Wireless - AZ |
| 520-401 | Pima | Tucson | AZ | 85701 | Sprint Spectrum L.P. |
| 520-402 | N/A | N/A | AZ | N/A | N/A |
| 520-403 | Pima | Tucson | AZ | 85701 | Cellco Partnership DBA Verizon Wireless - AZ |
| 520-404 | Pima | Tucson | AZ | 85701 | Cellco Partnership DBA Verizon Wireless - AZ |
| 520-405 | Pima | Tucson | AZ | 85701 | Cellco Partnership DBA Verizon Wireless - AZ |
| 520-406 | Pima | Tucson | AZ | 85701 | New Cingular Wireless PCS, LLC |
| 520-407 | Pima | Tucson | AZ | 85704 | Qwest Corporation |
| 520-408 | Pima | Tucson | AZ | 85704 | Qwest Corporation |
| 520-409 | Pima | Tucson | AZ | 85701 | New Cingular Wireless PCS, LLC |
| 520-410 | Pima | Tucson | AZ | 85704 | Qwest Corporation |
| 520-411 | N/A | N/A | AZ | N/A | N/A |
| 520-412 | N/A | N/A | AZ | N/A | N/A |
| 520-413 | Maricopa | Phoenix | AZ | 85034 | Level 3 Communications, LLC - AZ |
| 520-414 | Maricopa | Phoenix | AZ | 85034 | Level 3 Communications, LLC - AZ |
| 520-415 | Pima | Tucson | AZ | 85701 | Mcc Telephony Of The West, LLC - AZ |
| 520-416 | N/A | N/A | AZ | N/A | N/A |
| 520-417 | Cochise | Fort Huachuca | AZ | 85613 | Qwest Corporation |
| 520-418 | Maricopa | Chandler | AZ | 85225 | Gila River Telecomm, Inc. |
| 520-419 | Pima | Tucson | AZ | 85701 | Cellco Partnership DBA Verizon Wireless - AZ |
| 520-420 | N/A | N/A | AZ | N/A | N/A |
| 520-421 | Pinal | Casa Grande | AZ | 85122 | Qwest Corporation |
| 520-422 | Pima | Tucson | AZ | 85701 | At&T Local |
| 520-423 | Pinal | Casa Grande | AZ | 85122 | Qwest Corporation |
| 520-424 | Pinal | Stanfield | AZ | 85172 | Qwest Corporation |
| 520-425 | Pima | Tucson | AZ | 85701 | Cellco Partnership DBA Verizon Wireless - AZ |
| 520-426 | Pinal | Casa Grande | AZ | 85122 | Qwest Corporation |
| 520-427 | Pima | Tucson | AZ | 85701 | Sprint Spectrum L.P. |
| 520-428 | Pima | Tucson | AZ | 85701 | New Cingular Wireless PCS, LLC |
| 520-429 | Pima | Tucson | AZ | 85701 | Cellco Partnership DBA Verizon Wireless - AZ |
| 520-430 | Maricopa | Laveen | AZ | 85043 | Gila River Telecomm, Inc. |
| 520-431 | Pinal | Casa Grande | AZ | 85122 | New Cingular Wireless PCS, LLC |
| 520-432 | Cochise | Bisbee | AZ | 85603 | Qwest Corporation |
| 520-433 | Pima | Tucson | AZ | 85701 | Level 3 Communications, LLC - AZ |
| 520-434 | Pima | Tucson | AZ | 85706 | Qwest Corporation |
| 520-435 | N/A | N/A | AZ | N/A | N/A |
| 520-436 | N/A | N/A | AZ | N/A | N/A |
| 520-437 | Pima | Tucson | AZ | 85701 | XO Arizona, Inc. |
| 520-438 | N/A | N/A | AZ | N/A | N/A |
| 520-439 | Cochise | Fort Huachuca | AZ | 85613 | Qwest Corporation |
| 520-440 | Pima | Tucson | AZ | 85701 | T-Mobile Usa, Inc. |
| 520-441 | Pima | Tucson | AZ | 85701 | New Cingular Wireless PCS, LLC |
| 520-442 | Pima | Tucson | AZ | 85701 | Bandwidth.Com Clec, LLC - AZ |
| 520-443 | Pima | Tucson | AZ | 85701 | T-Mobile Usa, Inc. |
| 520-444 | Pima | Tucson | AZ | 85701 | Cellco Partnership DBA Verizon Wireless - AZ |
| 520-445 | Pima | Tucson | AZ | 85701 | New Cingular Wireless PCS, LLC |
| 520-446 | Pima | Tucson | AZ | 85704 | Usa Mobility Wireless, Inc. |
| 520-447 | Pima | Tucson | AZ | 85701 | Onvoy, Inc. - AZ |
| 520-448 | Pima | Tucson | AZ | 85701 | Peerless Network Of Arizona, LLC - AZ |
| 520-449 | Pima | Tucson | AZ | 85701 | Cellco Partnership DBA Verizon Wireless - AZ |
| 520-450 | Pinal | Casa Grande | AZ | 85122 | T-Mobile Usa, Inc. |
| 520-451 | N/A | N/A | AZ | N/A | N/A |
| 520-452 | Cochise | Fort Huachuca | AZ | 85613 | Qwest Corporation |
| 520-453 | N/A | N/A | AZ | N/A | N/A |
| 520-454 | Cochise | Fort Huachuca | AZ | 85613 | Qwest Corporation |
| 520-455 | Santa Cruz | Nogales | AZ | 85621 | Qwest Corporation |
| 520-456 | Cochise | Fort Huachuca | AZ | 85613 | Qwest Corporation |
| 520-457 | Cochise | Tombstone | AZ | 85638 | Qwest Corporation |
| 520-458 | Cochise | Fort Huachuca | AZ | 85613 | Qwest Corporation |
| 520-459 | Cochise | Fort Huachuca | AZ | 85613 | Qwest Corporation |
| 520-460 | Pima | Tucson | AZ | 85701 | Commnet Wireless, LLC |
| 520-461 | Maricopa | Phoenix | AZ | 85025 | Electric Lightwave, LLC DBA Integra Telecom - AZ |
| 520-462 | N/A | N/A | AZ | N/A | N/A |
| 520-463 | Pinal | Gold Canyon | AZ | 85118 | Qwest Corporation |
| 520-464 | Pinal | Eloy | AZ | 85131 | Qwest Corporation |
| 520-465 | Pima | Tucson | AZ | 85701 | New Cingular Wireless PCS, LLC |
| 520-466 | Pinal | Eloy | AZ | 85131 | Qwest Corporation |
| 520-467 | N/A | N/A | AZ | N/A | N/A |
| 520-468 | Pima | Tucson | AZ | 85701 | Neutral Tandem-Arizona, LLC - AZ |
| 520-469 | Pima | Tucson | AZ | 85704 | Qwest Corporation |
| 520-470 | Santa Cruz | Nogales | AZ | 85621 | Sprint Spectrum L.P. |
| 520-471 | Pima | Tucson | AZ | 85701 | Cellco Partnership DBA Verizon Wireless - AZ |
| 520-472 | N/A | N/A | AZ | N/A | N/A |
| 520-473 | N/A | N/A | AZ | N/A | N/A |
| 520-474 | Pima | Tucson | AZ | 85701 | Sprint Spectrum L.P. |
| 520-475 | N/A | N/A | AZ | N/A | N/A |
| 520-476 | N/A | N/A | AZ | N/A | N/A |
| 520-477 | Pima | Tucson | AZ | 85701 | Brooks Fiber Communications Of Tucson, Inc. - AZ |
| 520-478 | N/A | N/A | AZ | N/A | N/A |
| 520-479 | N/A | N/A | AZ | N/A | N/A |
| 520-480 | N/A | N/A | AZ | N/A | N/A |
| 520-481 | Pima | Tucson | AZ | 85701 | T-Mobile Usa, Inc. |
| 520-482 | N/A | N/A | AZ | N/A | N/A |
| 520-483 | Pinal | Casa Grande | AZ | 85122 | Cellco Partnership DBA Verizon Wireless - AZ |
| 520-484 | Pima | Tucson | AZ | 85701 | 365 Wireless, LLC |
| 520-485 | Pima | Pima | AZ | N/A | Bandwidth.Com Clec, LLC - AZ |
| 520-486 | N/A | N/A | AZ | N/A | N/A |
| 520-487 | Pinal | Mammoth | AZ | 85618 | Qwest Corporation |
| 520-488 | Pima | Tucson | AZ | 85701 | Cellco Partnership DBA Verizon Wireless - AZ |
| 520-489 | Pima | Tucson | AZ | 85704 | Qwest Corporation |
| 520-490 | Pima | Tucson | AZ | 85701 | Cellco Partnership DBA Verizon Wireless - AZ |
| 520-491 | Coconino | Flagstaff | AZ | 86001 | T-Mobile Usa, Inc. |
| 520-492 | N/A | N/A | AZ | N/A | N/A |
| 520-493 | N/A | N/A | AZ | N/A | N/A |
| 520-494 | Pinal | Arizona City | AZ | 85123 | Qwest Corporation |
| 520-495 | Pima | Tucson | AZ | 85706 | Tw Telecom Of Arizona LLC |
| 520-496 | N/A | N/A | AZ | N/A | N/A |
| 520-497 | N/A | N/A | AZ | N/A | N/A |
| 520-498 | Pima | Tucson | AZ | 85704 | Qwest Corporation |
| 520-499 | Pima | Tucson | AZ | 85701 | T-Mobile Usa, Inc. |
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