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: 928 [Rate centres in NPA 928] [Dial plan for NPA 928]

NXX: 337

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
928-337 A St Johns AZ STJHAZXBRS0  4426 CITIZENS TELECOM CO OF WHITE MOUNTAINS INC. 666      
928-337 0 St Johns AZ STJHAZXBRS0  4426 CITIZENS TELECOM CO OF WHITE MOUNTAINS INC. 666      
928-337 1 St Johns AZ PHNDAZ91DS5  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2012-03-18   
928-337 2 St Johns AZ STJHAZXBRS0  4426 CITIZENS TELECOM CO OF WHITE MOUNTAINS INC. 666      
928-337 3 St Johns AZ STJHAZXBRS0  4426 CITIZENS TELECOM CO OF WHITE MOUNTAINS INC. 666      
928-337 4 St Johns AZ STJHAZXBRS0  4426 CITIZENS TELECOM CO OF WHITE MOUNTAINS INC. 666      
928-337 5 St Johns AZ STJHAZXBRS0  4426 CITIZENS TELECOM CO OF WHITE MOUNTAINS INC. 666      
928-337 6 St Johns AZ STJHAZXBRS0  4426 CITIZENS TELECOM CO OF WHITE MOUNTAINS INC. 666      
928-337 7 St Johns AZ STJHAZXBRS0  4426 CITIZENS TELECOM CO OF WHITE MOUNTAINS INC. 666      
928-337 8 St Johns AZ PHNXAZUI8MD  508J CENTURYLINK COMMUNICATIONS, LLC 666   2015-09-26   
928-337 9 St Johns AZ STJHAZXBRS0  4426 CITIZENS TELECOM CO OF WHITE MOUNTAINS INC. 666      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.