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: SPFDMOMCX8X

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
417-920 A Springfield MO 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 522      
417-920 5 Springfield MO 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 522   2016-04-03   
417-920 6 Springfield MO 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 522   2016-04-03   
417-920 7 Springfield MO 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 522   2016-04-03   
417-920 8 Springfield MO 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 522   2016-04-03   
417-920 9 Springfield MO 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 522   2016-04-03   
417-990 1 Springfield MO 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 522   2026-03-03   
417-990 4 Springfield MO 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 522   2026-03-03   
417-990 6 Springfield MO 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 522   2026-03-03   
417-991 6 Lebanon MO 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 522   2017-10-03   
417-991 7 Lebanon MO 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 522   2017-10-03   
417-991 8 Lebanon MO 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 522   2017-10-03   
417-991 9 Lebanon MO 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 522   2011-04-15   

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Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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