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: GLBRMDGLDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-222 A Severn MD 9212 VERIZON MARYLAND, INC. 238      
410-424 A Glen Burnie MD 9212 VERIZON MARYLAND, INC. 238      
410-508 A Glen Burnie MD 9212 VERIZON MARYLAND, INC. 238      
410-553 A Glen Burnie MD 9212 VERIZON MARYLAND, INC. 238      
410-582 A Glen Burnie MD 9212 VERIZON MARYLAND, INC. 238      
410-590 A Glen Burnie MD 9212 VERIZON MARYLAND, INC. 238      
410-760 A Glen Burnie MD 9212 VERIZON MARYLAND, INC. 238      
410-761 A Glen Burnie MD 9212 VERIZON MARYLAND, INC. 238      
410-762 A Glen Burnie MD 9212 VERIZON MARYLAND, INC. 238      
410-766 A Glen Burnie MD 9212 VERIZON MARYLAND, INC. 238      
410-768 A Glen Burnie MD 9212 VERIZON MARYLAND, INC. 238      
410-787 A Glen Burnie MD 9212 VERIZON MARYLAND, INC. 238      
410-863 A Glen Burnie MD 9212 VERIZON MARYLAND, INC. 238      
410-969 A Severn MD 9212 VERIZON MARYLAND, INC. 238      
443-572 A Glen Burnie MD 9212 VERIZON MARYLAND, INC. 238      

Last updated: Mon, 24 May 2021 01:28:43 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.