Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: MTONIL781MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
447-280 A Mattoon IL 475J CALLWORKS CORPORATION 976      
447-280 1 Mattoon IL 475J CALLWORKS CORPORATION 976   2023-12-11   

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

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