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: 775 [Rate centres in NPA 775] [Dial plan for NPA 775]

NXX: 506

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
775-506 A Silver Springs NV RENONV12X8X  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 720      
775-506 0 Silver Springs NV RENONV12LMD  624H ONVOY SPECTRUM, LLC 720   2024-01-03   
775-506 1 Silver Springs NV RENONV12IMD  073H TELNYX LLC 720   2023-12-24   
775-506 4 Silver Springs NV RENONV12X8X  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 720   2022-10-20   
775-506 7 Silver Springs NV RENONV12X8X  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 720   2022-10-20   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.