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.
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OCN: 907K ALLO COMMUNICATIONS LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
913-521 2 Kansas City KS   524   2018-04-26   
913-521 4 Kansas City KS   524   2018-04-26   
913-521 9 Kansas City KS   524   2019-06-26   
913-627 9 Kansas City KS   524   2009-04-18   
913-653 8 Kansas City KS   524   2008-09-25   
913-730 1 Kansas City KS   524   2011-05-28   
913-777 A Kansas City KS   524      
913-777 5 Kansas City KS   524   2011-07-15   
913-777 7 Kansas City KS   524   2011-07-14   
913-942 2 Kansas City KS   524   2017-06-11   
913-944 A Kansas City KS   524      
913-951 2 Kansas City KS   524   2010-07-26   
913-953 8 Kansas City KS   524   2009-12-10   
913-985 A Kansas City KS KSCYMO5507Z  524   2025-12-25   
913-985 5 Kansas City KS KSCYMO5507Z  524   2025-12-25   
928-418 0 Kingman AZ PHNXAZMAXGZ  666   2023-09-25   
928-456 5 Flagstaff AZ PHNXAZMAXGZ  666   2023-11-24   
928-483 5 Yuma AZ PHNXAZMAXGZ  666   2023-08-31   
928-508 5 Yuma AZ PHNXAZMAXGZ  666   2025-05-26   
928-512 A Somerton AZ PHNXAZMAXGZ  666      
928-512 5 Somerton AZ PHNXAZMAXGZ  666   2023-11-24   
928-540 5 Lake Havasu City AZ PHNXAZMAXGZ  666   2025-05-26   
928-732 0 Lake Havasu City AZ PHNXAZMAXGZ  666   2023-08-28   
928-880 5 Kingman AZ PHNXAZMAXGZ  666   2025-06-30   
970-502 5 Greeley CO   656   2024-10-13   
970-503 A Greeley CO DNVRCOMA62Z  656      
970-503 5 Greeley CO DNVRCOMA62Z  656   2021-05-02   
970-604 5 Brush CO   656   2023-11-24   
970-743 A Fort Morgan CO DNVRCOMA62Z  656      
970-743 3 Fort Morgan CO DNVRCOMA62Z  656   2018-10-14   
970-771 4 Breckenridge CO DNVRCOMA62Z  656   2019-06-24   
970-861 5 Greeley CO DNVRCOMA62Z  656   2024-10-13   
970-972 5 Eaton CO   656   2023-03-11   
983-955 A Denver CO DNVRCOMA62Z  656   2025-10-24   
983-955 5 Denver CO DNVRCOMA62Z  656   2025-10-24   

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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