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.

Switch: SNANTXCA80Z

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
956-952 A Laredo TX 624H ONVOY SPECTRUM, LLC 566      
956-952 1 Laredo TX 624H ONVOY SPECTRUM, LLC 566   2021-11-12   
956-952 6 Laredo TX 624H ONVOY SPECTRUM, LLC 566   2021-06-24   
956-955 3 Laredo TX 624H ONVOY SPECTRUM, LLC 566   2021-11-12   
956-955 4 Laredo TX 624H ONVOY SPECTRUM, LLC 566   2021-11-12   
956-964 A Encinal TX 624H ONVOY SPECTRUM, LLC 566      
956-964 6 Encinal TX 624H ONVOY SPECTRUM, LLC 566   2021-06-24   
956-964 7 Encinal TX 624H ONVOY SPECTRUM, LLC 566   2021-12-04   
956-964 8 Encinal TX 624H ONVOY SPECTRUM, LLC 566   2021-12-04   

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

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