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   
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   
719-975 A Colorado Springs-Main CO   658   2025-10-02   
719-975 5 Colorado Springs-Main CO   658   2025-10-02   
983-955 A Denver CO   656   2025-10-24   
983-955 5 Denver CO   656   2025-10-24   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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