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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

OCN: 9212 VERIZON MARYLAND, INC.

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
667-812 2 Waterloo (Washington DC LATA) MD   236   2015-10-10   
667-812 3 Waterloo (Washington DC LATA) MD   236   2015-10-10   
667-812 4 Waterloo (Washington DC LATA) MD   236   2015-10-10   
667-812 5 Waterloo (Washington DC LATA) MD   236   2015-10-10   
667-812 6 Waterloo (Washington DC LATA) MD   236   2015-10-10   
667-812 7 Waterloo (Washington DC LATA) MD   236   2015-10-10   
667-812 8 Waterloo (Washington DC LATA) MD   236   2015-10-10   
667-812 9 Waterloo (Washington DC LATA) MD   236   2015-10-10   

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Last updated: Sat, 09 Mar 2019 02:16:03 UTC

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