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: CCTNMDCLRS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-275 A Cecilton MD 9212 VERIZON MARYLAND, INC. 242      
410-755 A Warwick MD 9212 VERIZON MARYLAND, INC. 242      

Last updated: Sat, 08 Jun 2019 01:52:21 UTC

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