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: KNVLIAXCTMD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
641-949 3 Tracy IA 221F ONVOY, LLC - IA 632   2021-04-16   
641-949 4 Tracy IA 221F ONVOY, LLC - IA 632   2019-11-29   
641-949 5 Tracy IA 221F ONVOY, LLC - IA 632   2021-04-16   
641-955 4 Monroe IA 221F ONVOY, LLC - IA 632   2021-04-22   
641-955 6 Monroe IA 221F ONVOY, LLC - IA 632   2020-11-20   
641-955 7 Monroe IA 221F ONVOY, LLC - IA 632   2021-04-22   
641-969 8 Eddyville IA 221F ONVOY, LLC - IA 632   2020-11-19   
641-977 3 New Sharon IA 221F ONVOY, LLC - IA 632   2021-04-22   
641-977 4 New Sharon IA 221F ONVOY, LLC - IA 632   2021-04-22   
641-977 6 New Sharon IA 221F ONVOY, LLC - IA 632   2020-11-20   
660-360 0 South Seymour MO 093F ONVOY, LLC - MO 632   2023-10-09   

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

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