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NPA: 520 [Rate centres in NPA 520] [Dial plan for NPA 520]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-537 3 Tucson AZ TCSNAZMAX3Y  624H ONVOY SPECTRUM, LLC 668   2021-05-22   
520-537 4 Tucson AZ TCSNAZMAX3Y  624H ONVOY SPECTRUM, LLC 668   2021-05-22   
520-537 5 Tucson AZ TCSMAZCHEMD  321J HD CARRIER LLC 668   2021-05-07   
520-537 6 Tucson AZ TCSMAZCHEMD  321J HD CARRIER LLC 668   2021-05-07   
520-537 7 Tucson AZ TCSMAZCHEMD  321J HD CARRIER LLC 668   2021-05-07   
520-537 8 Tucson AZ TCSMAZCHEMD  321J HD CARRIER LLC 668   2021-05-07   
520-537 9 Tucson AZ TCSMAZCHEMD  321J HD CARRIER LLC 668   2021-05-07   
520-538 A Sierra Vista AZ SRVSAZMADS0  9636 QWEST CORPORATION 668      
520-539 A Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668      
520-539 0 Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2014-05-24   
520-539 1 Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2014-05-24   
520-539 2 Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2014-05-24   
520-539 3 Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2014-05-24   
520-539 4 Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2014-06-08   
520-539 5 Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2014-06-16   
520-539 6 Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2014-06-16   
520-539 7 Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2014-06-16   
520-539 8 Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2014-06-21   
520-539 9 Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2014-06-21   
520-540 A Tucson AZ TCSNAZMAXIX  587F BANDWIDTH.COM CLEC, LLC - AZ 668      
520-540 0 Tucson AZ TCSNAZMAXIX  587F BANDWIDTH.COM CLEC, LLC - AZ 668   2023-02-18   
520-540 1 Tucson AZ TCSNAZMAXIX  587F BANDWIDTH.COM CLEC, LLC - AZ 668   2023-02-18   
520-540 2 Tucson AZ TCSNAZMAXIX  587F BANDWIDTH.COM CLEC, LLC - AZ 668   2023-02-18   
520-540 3 Tucson AZ TCSMAZCHDS0  579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 668   2023-02-20   
520-540 4 Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2023-05-12   
520-540 5 Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2023-05-12   
520-540 6 Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2023-05-12   
520-540 7 Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2023-04-14   
520-540 8 Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2023-04-14   
520-540 9 Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2023-04-14   
520-541 A Willcox AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668      
520-541 0 Willcox AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2021-08-21   
520-541 1 Willcox AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2021-08-21   
520-541 2 Willcox AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2021-08-21   
520-541 3 Willcox AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2021-08-21   
520-541 4 Willcox AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2021-08-21   
520-541 5 Willcox AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2021-08-27   
520-541 6 Willcox AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2021-08-27   
520-541 7 Willcox AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2021-10-28   
520-541 8 Willcox AZ   515J IP HORIZON LLC 668   2021-09-26   
520-541 9 Willcox AZ TCSMAZCHDS0  579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 668   2021-09-24   
520-542 A Tucson AZ TCSNAZMAVMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668      
520-542 0 Tucson AZ TCSNAZMAX3Y  624H ONVOY SPECTRUM, LLC 668   2021-11-01   
520-542 1 Tucson AZ TCSNAZMAX3Y  624H ONVOY SPECTRUM, LLC 668   2021-11-01   
520-542 2 Tucson AZ TCSNAZMAVMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668   2021-10-07   
520-542 3 Tucson AZ TCSNAZMAVMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668   2021-10-07   
520-542 4 Tucson AZ TCSNAZMAX3Y  624H ONVOY SPECTRUM, LLC 668   2021-11-01   
520-542 5 Tucson AZ TCSNAZMAX3Y  624H ONVOY SPECTRUM, LLC 668   2021-10-08   
520-542 6 Tucson AZ TCSNAZMAX3Y  624H ONVOY SPECTRUM, LLC 668   2021-11-01   
520-542 7 Tucson AZ TCSNAZMAX3Y  624H ONVOY SPECTRUM, LLC 668   2021-11-01   

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Last updated: Sat, 04 Jul 2026 13:07:56 UTC

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