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: BLTMMDFRDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-325 A Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-325 1 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-325 2 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-325 3 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-325 4 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-325 5 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-325 6 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-325 7 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-325 8 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-325 9 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-483 A Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-483 0 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-483 1 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-483 2 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-483 3 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-483 4 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-483 5 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-483 6 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-483 7 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-483 9 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-485 A Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-488 A Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-866 A Essex MD 9212 VERIZON MARYLAND, INC. 238      
443-868 A Essex MD 9212 VERIZON MARYLAND, INC. 238      
443-868 0 Essex MD 9212 VERIZON MARYLAND, INC. 238      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.