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.

OCN: 907K ALLO COMMUNICATIONS LLC

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
308-855 A Scottsbluff NE   646   2025-10-03   
308-855 5 Scottsbluff NE   646   2025-10-03   
308-910 A Grand Island NE   646      
308-910 5 Grand Island NE   646   2025-12-14   
417-585 A Joplin MO   522   2025-12-15   
417-585 5 Joplin MO   522   2025-12-15   
520-785 A Tucson AZ   668   2025-12-19   
520-785 5 Tucson AZ   668   2025-12-19   
531-795 A Lincoln NE   958   2025-10-03   
531-795 5 Lincoln NE   958   2025-10-03   
531-985 A Omaha NE   644   2025-10-03   
531-985 5 Omaha NE   644   2025-10-03   
623-955 A Phoenix AZ   666   2025-12-19   
623-955 5 Phoenix AZ   666   2025-12-19   
719-975 A Colorado Springs-Main CO   658   2025-10-02   
719-975 5 Colorado Springs-Main CO   658   2025-10-02   
913-985 A Kansas City KS   524   2025-12-25   
913-985 5 Kansas City KS   524   2025-12-25   
983-955 A Denver CO   656   2025-10-24   
983-955 5 Denver CO   656   2025-10-24   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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