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: 2589 US LEC OF MARYLAND, INC.

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
240-613 0 Washington Zone 4 MD   236   2012-05-27   
240-613 1 Washington Zone 4 MD   236   2012-05-27   
240-613 2 Washington Zone 4 MD   236   2012-05-27   
240-613 3 Washington Zone 4 MD   236   2012-05-27   
240-613 4 Washington Zone 4 MD   236   2012-05-27   
240-613 5 Washington Zone 4 MD   236   2012-05-27   
240-613 6 Washington Zone 4 MD   236   2012-05-27   
240-613 7 Washington Zone 4 MD   236   2012-05-27   
240-613 8 Washington Zone 4 MD   236   2012-05-27   
240-613 9 Washington Zone 4 MD   236   2012-05-27   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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