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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Switch: SPFDMAWOSMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
413-417 8 Springfield MA 156J RCLEC, INC. 126   2017-03-07   
413-507 3 Springfield MA 156J RCLEC, INC. 126   2017-01-05   
413-930 A Springfield MA 156J RCLEC, INC. 126      
413-930 4 Springfield MA 156J RCLEC, INC. 126   2014-08-08   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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