Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
641-492 3 Montour IA 221F ONVOY, LLC - IA 632   2021-09-03   
641-492 4 Montour IA 221F ONVOY, LLC - IA 632   2021-05-08   
641-499 3 Garwin IA 221F ONVOY, LLC - IA 632   2021-08-30   
641-499 4 Garwin IA 221F ONVOY, LLC - IA 632   2021-05-06   
641-557 3 New Hampton IA 221F ONVOY, LLC - IA 632   2021-09-04   
641-557 4 New Hampton IA 221F ONVOY, LLC - IA 632   2021-05-08   
641-557 6 New Hampton IA 221F ONVOY, LLC - IA 632   2021-09-04   
641-582 6 Forest City IA 221F ONVOY, LLC - IA 632   2021-08-30   
641-582 7 Forest City IA 221F ONVOY, LLC - IA 632   2021-08-30   
641-599 6 St Ansgar IA 221F ONVOY, LLC - IA 632   2021-05-08   
641-643 2 Malcom IA 221F ONVOY, LLC - IA 632   2022-06-04   
641-643 3 Malcom IA 221F ONVOY, LLC - IA 632   2021-09-12   
641-643 4 Malcom IA 221F ONVOY, LLC - IA 632   2021-09-12   
641-643 6 Malcom IA 221F ONVOY, LLC - IA 632   2021-06-12   
641-659 4 Grinnell IA 221F ONVOY, LLC - IA 632   2021-08-30   
641-659 5 Grinnell IA 221F ONVOY, LLC - IA 632   2021-08-30   
641-710 0 Stacyville IA 221F ONVOY, LLC - IA 632   2021-09-04   
641-736 3 St Ansgar IA 221F ONVOY, LLC - IA 632   2021-09-04   
641-737 3 Stacyville IA 221F ONVOY, LLC - IA 632   2021-05-08   
641-823 6 Greene IA 221F ONVOY, LLC - IA 632   2021-05-06   
641-823 8 Greene IA 221F ONVOY, LLC - IA 632   2021-08-30   

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Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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