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: 404 [Rate centres in NPA 404] [Dial plan for NPA 404]

NXX: 540

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
404-540 A Atlanta GA   616J LEAP TELECOM, LLC 438   2025-07-12   
404-540 0 Atlanta GA   616J LEAP TELECOM, LLC 438   2025-07-12   
404-540 1 Atlanta GA   616J LEAP TELECOM, LLC 438   2025-07-12   
404-540 2 Atlanta GA   490J DISH WIRELESS, LLC 438   2025-12-26   
404-540 3 Atlanta GA   490J DISH WIRELESS, LLC 438   2025-11-06   
404-540 4 Atlanta GA   490J DISH WIRELESS, LLC 438   2025-10-02   
404-540 5 Atlanta GA   490J DISH WIRELESS, LLC 438   2025-09-04   
404-540 6 Atlanta GA   490J DISH WIRELESS, LLC 438   2025-08-07   
404-540 7 Atlanta GA   067D ONVOY, LLC - GA 438   2025-07-25   
404-540 8 Atlanta GA   067D ONVOY, LLC - GA 438   2025-07-25   
404-540 9 Atlanta GA   067D ONVOY, LLC - GA 438   2025-07-25   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.