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: OCPNMDCRRS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-208 A Berlin MD 9212 VERIZON MARYLAND, INC. 242      
410-208 0 Berlin MD 9212 VERIZON MARYLAND, INC. 242      
410-208 1 Berlin MD 9212 VERIZON MARYLAND, INC. 242      
410-208 2 Berlin MD 9212 VERIZON MARYLAND, INC. 242      
410-208 3 Berlin MD 9212 VERIZON MARYLAND, INC. 242      
410-208 4 Berlin MD 9212 VERIZON MARYLAND, INC. 242      
410-208 6 Berlin MD 9212 VERIZON MARYLAND, INC. 242      
410-208 9 Berlin MD 9212 VERIZON MARYLAND, INC. 242      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.