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: 476

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-476 A Tucson AZ TCSNAZMAXAY  478J NUSO, LLC 668      
520-476 0 Tucson AZ TCSNAZMAX6Y  073H TELNYX LLC 668   2020-10-26   
520-476 1 Tucson AZ TCSNAZMAXAY  478J NUSO, LLC 668   2020-10-25   
520-476 2 Tucson AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2021-06-09   
520-476 3 Tucson AZ TCSNAZMAVMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668   2020-10-26   
520-476 4 Tucson AZ TCSNAZMAXCY  318J COMCAST IP PHONE, LLC 668   2020-10-26   
520-476 5 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2020-10-26   
520-476 6 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2020-10-26   
520-476 7 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2020-10-26   
520-476 8 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2020-10-26   
520-476 9 Tucson AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2020-10-26   

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.