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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OCN: 428A ICON TELECOM, INC. - CLEC - OK

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
405-363 A Stillwater OK OKCYOKFNDS0  536   2004-06-12   
580-356 A Duncan OK OKCYOKFNDS0  536   2004-06-18   
580-452 A Lawton OK OKCYOKFNDS0  536      
580-489 A Glencoe OK OKCYOKFNDS0  536   2004-06-12   
580-506 A Durant OK OKCYOKFNDS0  536   2004-07-18   
580-573 A Rush Springs OK OKCYOKFNDS0  536   2004-07-18   
580-629 A Marlow OK OKCYOKFNDS0  536   2004-06-18   
580-636 A Perry OK OKCYOKFNDS0  536   2004-06-12   
580-659 A Altus OK OKCYOKFNDS0  536   2004-07-18   
580-731 A Ada OK OKCYOKFNDS0  536   2004-07-18   
580-783 A Morrison OK OKCYOKFNDS0  536   2004-06-18   

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

Sponsored by: ISP Telecom

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