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: 912

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-912 A Tucson AZ TCSMAZCH1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 668      
520-912 0 Tucson AZ TCSMAZCH1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 668      
520-912 1 Tucson AZ TCSMAZOI4MD  5562 METROPCS, INC. 668      
520-912 2 Tucson AZ TCSMAZOI4MD  5562 METROPCS, INC. 668      
520-912 3 Tucson AZ TCSMAZCH1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 668      
520-912 4 Tucson AZ TCSNAZMAXCY  318J COMCAST IP PHONE, LLC 668      
520-912 5 Tucson AZ TCSMAZOI4MD  5562 METROPCS, INC. 668      
520-912 6 Tucson AZ TCSMAZCH1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 668      
520-912 7 Tucson AZ TCSMAZOI4MD  5562 METROPCS, INC. 668      
520-912 8 Tucson AZ TCSMAZOI4MD  5562 METROPCS, INC. 668      
520-912 9 Tucson AZ TCSMAZOI4MD  5562 METROPCS, INC. 668      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.