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520-579 Exchange Details
State: AZArea: Arizona, AZ
Cities: Marana, Tucson
Carrier: MOUNTAIN TELECOMMUNICATIONS, INC. - CLEC
0 - 500
| 501 - 1001
| 1002 - 1502
| 1503 - 2003
| 2004 - 2504
| 2505 - 3005
| 3006 - 3506
| 3507 - 4007
| 4008 - 4508
| 4509 - 5009
| 5010 - 5510
| 5511 - 6011
| 6012 - 6512
| 6513 - 7013
| 7014 - 7514
| 7515 - 8015
| 8016 - 8516
| 8517 - 9017
| 9018 - 9518
| 9519 - 9999
Numbers (520) 579-0000 - (520) 579-0500
0 - 500
| 501 - 1001
| 1002 - 1502
| 1503 - 2003
| 2004 - 2504
| 2505 - 3005
| 3006 - 3506
| 3507 - 4007
| 4008 - 4508
| 4509 - 5009
| 5010 - 5510
| 5511 - 6011
| 6012 - 6512
| 6513 - 7013
| 7014 - 7514
| 7515 - 8015
| 8016 - 8516
| 8517 - 9017
| 9018 - 9518
| 9519 - 9999