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]

NXX: 309

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-309 A Tucson AZ TCSMAZCH1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 668      
520-309 0 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2006-08-06   
520-309 1 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2006-01-16   
520-309 2 Tucson AZ TCSNAZMADS1  9636 QWEST CORPORATION 668   2005-12-13   
520-309 3 Tucson AZ TCSNAZMADS1  9636 QWEST CORPORATION 668   2005-12-13   
520-309 4 Tucson AZ TCSNAZMADS1  9636 QWEST CORPORATION 668   2005-12-13   
520-309 5 Tucson AZ TCSMAZCH1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 668   2006-03-27   
520-309 6 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2013-10-03   
520-309 7 Tucson AZ TCSMAZOI4MD  5562 METROPCS, INC. 668   2006-01-23   
520-309 8 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2006-02-09   
520-309 9 Tucson AZ TCSMAZOI4MD  5562 METROPCS, INC. 668   2006-02-06   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.