Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-535 1 Tucson AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2021-01-30   
520-535 2 Tucson AZ TCSNAZMAVMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668   2021-01-30   
520-535 3 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2021-01-29   
520-535 4 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2021-01-29   
520-535 5 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2021-01-29   
520-535 6 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2021-01-29   
520-535 7 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2021-01-29   
520-535 8 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2021-01-29   
520-535 9 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2021-01-29   
520-536 A Douglas AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-536 0 Douglas AZ TCSNAZMAX6Y  073H TELNYX LLC 668   2021-03-25   
520-536 1 Douglas AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2021-06-28   
520-536 2 Douglas AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2021-02-19   
520-536 3 Douglas AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2021-02-19   
520-536 4 Douglas AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2021-02-19   
520-536 5 Douglas AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2021-02-19   
520-536 6 Douglas AZ TCSNAZMAVMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668   2022-10-27   
520-536 7 Douglas AZ TCSNAZMAXDY  506J TWILIO INTERNATIONAL, INC. 668   2021-02-21   
520-536 8 Douglas AZ TCSMAZCHDS0  579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 668   2021-05-28   
520-536 9 Douglas AZ TCSMAZCHDS0  579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 668   2021-02-20   
520-537 A Tucson AZ TCSNAZMAXBY  515J IP HORIZON LLC 668      
520-537 0 Tucson AZ TCSNAZMAX3Y  624H ONVOY SPECTRUM, LLC 668   2021-05-22   
520-537 1 Tucson AZ   515J IP HORIZON LLC 668   2021-04-25   
520-537 2 Tucson AZ TCSNAZMAVMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668   2021-05-15   
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   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 >>

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.