Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 331 [Rate centres in NPA 331] [Dial plan for NPA 331]

NXX: 318

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-318 A Lemont IL CHCGIL241MD  057H LOCAL ACCESS LLC - IL 358      
331-318 0 Lemont IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-16   
331-318 1 Lemont IL   057H LOCAL ACCESS LLC - IL 358   2013-09-30   
331-318 2 Lemont IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-16   
331-318 3 Lemont IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2014-02-08   
331-318 4 Lemont IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2014-02-16   
331-318 5 Lemont IL   4604 FIRST COMMUNICATIONS LLC - IL 358   2014-03-22   
331-318 6 Lemont IL   138G LEVEL 3 TELECOM OF ILLINOIS, LLC - IL 358   2014-02-27   
331-318 7 Lemont IL   7607 COMCAST PHONE OF ILLINOIS, LLC DBA COMCO - IL 358   2014-07-28   
331-318 8 Lemont IL   7607 COMCAST PHONE OF ILLINOIS, LLC DBA COMCO - IL 358   2014-08-14   
331-318 9 Lemont IL   6529 T-MOBILE USA, INC. 358   2014-11-21   

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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