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: SPFDILESXWX

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
447-743 8 Springfield IL 6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 374   2025-05-02   
447-743 9 Springfield IL 6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 374   2025-05-02   
447-910 8 Springfield IL 6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 374   2023-04-04   

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Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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