Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 520 [Rate centres in NPA 520] [Dial plan for NPA 520]

NXX: 274

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-274 A Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      
520-274 0 Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2017-12-11   
520-274 1 Tucson AZ TCSNAZMAVMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668   2017-09-23   
520-274 2 Tucson AZ TCSNAZMAVMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668   2016-11-13   
520-274 3 Tucson AZ TCSNAZMAVMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668   2017-06-14   
520-274 4 Tucson AZ TCSNAZMAXCY  318J COMCAST IP PHONE, LLC 668   2016-11-24   
520-274 5 Tucson AZ TCSMAZOI3MD  5562 METROPCS, INC. 668   2017-10-05   
520-274 6 Tucson AZ TCSMAZOI3MD  5562 METROPCS, INC. 668   2017-10-05   
520-274 7 Tucson AZ TCSNAZMAXCY  318J COMCAST IP PHONE, LLC 668   2017-07-26   
520-274 8 Tucson AZ TCSMAZCHDS0  579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 668   2017-07-26   
520-274 9 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2016-11-12   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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