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.
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Switch: GARYINGOZMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
219-228 6 Hammond IN 511K RCN TELECOM SERVICES OF ILLINOIS, LLC 358   2004-10-01   
219-230 7 Hammond IN 511K RCN TELECOM SERVICES OF ILLINOIS, LLC 358   2007-08-10   
219-554 5 Hammond IN 511K RCN TELECOM SERVICES OF ILLINOIS, LLC 358   2007-07-30   
219-595 1 Highland IN 511K RCN TELECOM SERVICES OF ILLINOIS, LLC 358   2007-07-30   
219-595 4 Highland IN 511K RCN TELECOM SERVICES OF ILLINOIS, LLC 358   2006-12-05   
219-655 2 Whiting IN 511K RCN TELECOM SERVICES OF ILLINOIS, LLC 358   2007-07-30   
219-655 4 Whiting IN 511K RCN TELECOM SERVICES OF ILLINOIS, LLC 358   2004-10-01   
219-961 6 Highland IN 511K RCN TELECOM SERVICES OF ILLINOIS, LLC 358   2004-10-01   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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