Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 618 [Rate centres in NPA 618] [Dial plan for NPA 618]

NXX: 523

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-523 A Germantown IL GTWCILGTRS0  9329 ILLINOIS BELL TEL CO 520      
618-523 0 Germantown IL STLSMOGZ6MD  073H TELNYX LLC 520      
618-523 1 Germantown IL STLSMOGZDS5  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 520      
618-523 2 Germantown IL COVLILCQXIX  984E BANDWIDTH.COM CLEC, LLC - IL 520      
618-523 3 Germantown IL COVLILCL0MD  516C AT&T CORP. 520      
618-523 4 Germantown IL GTWCILGTRS0  9329 ILLINOIS BELL TEL CO 520      
618-523 5 Germantown IL SWNSILBLPS0  462C CHARTER FIBERLINK - ILLINOIS, LLC - IL 520      
618-523 6 Germantown IL COVLILCQXEX  508J CENTURYLINK COMMUNICATIONS, LLC 520      
618-523 7 Germantown IL STLSMOWQDS2  224C ONVOY, LLC 520      
618-523 8 Germantown IL COVLILCLPMD  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 520      
618-523 9 Germantown IL STLSMOWQDS2  224C ONVOY, LLC 520      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.