Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Springfield, IL

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
447-910 9 SPFDILES7MD  224C ONVOY, LLC 374   2024-09-06   

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Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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