Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 447 [Rate centres in NPA 447] [Dial plan for NPA 447]

NXX: 299

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
447-299 A Springfield IL SPFDILESXFY  616J LEAP TELECOM, LLC 374   2024-11-21   
447-299 0 Springfield IL SPFDILESXFY  616J LEAP TELECOM, LLC 374   2024-11-21   
447-299 9 Springfield IL   816C INTRADO COMMUNICATIONS, LLC 374   2026-10-10   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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