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: DESMIAITX6X

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
641-923 1 Garner IA 6529 T-MOBILE USA, INC. 632   2007-01-21   
641-924 8 Garner IA 6529 T-MOBILE USA, INC. 632   2018-04-12   
641-925 5 Garner IA 5562 METROPCS, INC. 632   2018-07-09   
641-954 6 Ottumwa IA 6529 T-MOBILE USA, INC. 632   2011-12-09   
641-980 3 Ottumwa IA 5562 METROPCS, INC. 632   2018-07-10   
641-980 5 Ottumwa IA 6529 T-MOBILE USA, INC. 632   2009-06-22   
641-980 6 Ottumwa IA 6529 T-MOBILE USA, INC. 632   2009-06-22   
641-980 7 Ottumwa IA 6529 T-MOBILE USA, INC. 632   2008-07-15   
641-980 9 Ottumwa IA 6529 T-MOBILE USA, INC. 632   2007-03-18   

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Last updated: Sun, 17 May 2026 03:26:51 UTC

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