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: 568G PEERLESS NETWORK OF MARYLAND, LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
667-930 7 Baltimore MD BLTQMD01DS0  238   2016-11-05   
667-930 8 Baltimore MD BLTQMD01DS0  238   2016-11-05   
667-930 9 Baltimore MD BLTQMD01DS0  238   2016-11-05   

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Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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