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.

Grayson, AL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
256-292 A GYSNALXAPS0  0314 PEOPLES TEL. CO., INC. 477      
256-292 0   604E ONVOY, LLC - AL 477   2021-01-22   
256-292 1   0314 PEOPLES TEL. CO., INC. 477      
256-292 2   0314 PEOPLES TEL. CO., INC. 477      
256-292 3   0314 PEOPLES TEL. CO., INC. 477      
256-292 4   0314 PEOPLES TEL. CO., INC. 477      
256-292 5   0314 PEOPLES TEL. CO., INC. 477      
256-292 6   0314 PEOPLES TEL. CO., INC. 477      
256-292 7   604E ONVOY, LLC - AL 477   2020-06-01   
256-292 8   604E ONVOY, LLC - AL 477   2020-09-14   
256-292 9   604E ONVOY, LLC - AL 477   2020-09-14   
256-987 A HNVIALUNX6X  604E ONVOY, LLC - AL 477      
256-987 0   5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477   2021-11-15   
256-987 1   792K CHARTER IP ENABLED SERVICES, LLC 477   2023-05-28   
256-987 3   476F CORETEL ALABAMA, INC. - AL 477   2021-11-06   
256-987 5   604E ONVOY, LLC - AL 477   2021-04-15   
256-987 6   604E ONVOY, LLC - AL 477   2021-04-15   
256-987 8   624H ONVOY SPECTRUM, LLC 477   2024-12-12   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.