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.

Switch: ANNPMDAN6MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
443-486 A Prince Frederick MD 8864 BROADWING COMMUNICATIONS. LLC - MD 238      
443-926 A Annapolis MD 8864 BROADWING COMMUNICATIONS. LLC - MD 238      

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

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