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: 203

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-203 A Tucson AZ TCSNAZXGDS0  7465 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AZ 668      
520-203 0 Tucson AZ TCSNAZXGDS0  7465 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AZ 668   2003-10-10   
520-203 1 Tucson AZ TCSMAZCH1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 668   2003-10-10   
520-203 2 Tucson AZ TCSMAZCH1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 668   2004-12-06   
520-203 3 Tucson AZ TCSMAZCH1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 668   2004-01-06   
520-203 4 Tucson AZ TCSMAZCH1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 668   2004-07-25   
520-203 5 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2004-08-13   
520-203 6 Tucson AZ TCSMAZCH1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 668   2005-01-11   
520-203 7 Tucson AZ TCSNAZMAXCY  318J COMCAST IP PHONE, LLC 668   2004-04-09   
520-203 8 Tucson AZ TCSNAZMAXCY  318J COMCAST IP PHONE, LLC 668   2004-04-09   
520-203 9 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2005-03-11   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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