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: 675

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-675 A Grantfork IL ALHBILXEDS0  0978 ALHAMBRA-GRANTFORK TEL. CO. 520      

Last updated: Tue, 07 Oct 2025 16:47:53 UTC

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