Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 618 [Rate centres in NPA 618] [Dial plan for NPA 618]

NXX: 441

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-441 A Ashley IL BLVLILAJ3MD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 520      
618-441 0 Ashley IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 520      
618-441 1 Ashley IL   624H ONVOY SPECTRUM, LLC 520   2025-01-04   
618-441 4 Ashley IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 520      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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