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: 457

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
775-457 A Imlay NV RENONV12KMD  073H TELNYX LLC 720      
775-457 0 Imlay NV   073H TELNYX LLC 720   2021-01-07   
775-457 1 Imlay NV   515J IP HORIZON LLC 720   2022-04-21   
775-457 2 Imlay NV   624H ONVOY SPECTRUM, LLC 720   2023-11-20   
775-457 3 Imlay NV   516C AT&T CORP. 720   2025-01-22   
775-457 8 Imlay NV   939H COMMIO, LLC 720   2022-10-23   
775-457 9 Imlay NV   6010 NEW CINGULAR WIRELESS PCS, LLC 720   2021-08-27   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.