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: 678 [Rate centres in NPA 678] [Dial plan for NPA 678]

NXX: 399

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
678-399 A Atlanta GA ATLNGABUXZY  983E BANDWIDTH.COM CLEC, LLC - GA 438      
678-399 0 Atlanta GA NRCSGAGZ5MD  5562 METROPCS, INC. 438      
678-399 1 Atlanta GA ATLNGAQSDS8  067D ONVOY, LLC - GA 438      
678-399 2 Atlanta GA ATLNGAQSDS8  067D ONVOY, LLC - GA 438      
678-399 3 Atlanta GA ATLNGATLFMD  516C AT&T CORP. 438      
678-399 4 Atlanta GA   829J PAETEC ITEL, LLC 438      
678-399 5 Atlanta GA   829J PAETEC ITEL, LLC 438      
678-399 6 Atlanta GA ATLNGAQSDS8  067D ONVOY, LLC - GA 438      
678-399 7 Atlanta GA   829J PAETEC ITEL, LLC 438      
678-399 8 Atlanta GA ATLNGAQSDS8  067D ONVOY, LLC - GA 438      
678-399 9 Atlanta GA ATLNGABUXZY  983E BANDWIDTH.COM CLEC, LLC - GA 438      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.