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: BLTMMDHMDS0

Remotes:

Switch Switch name Switch type
FORKMDFKRS1  FORK ESS  EXM 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-254 A Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-319 A Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-319 1 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-319 3 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-319 5 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-319 6 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-319 7 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-319 8 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-319 9 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-426 A Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-444 A Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
443-885 A Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
443-885 1 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
443-885 2 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
443-885 3 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
443-885 4 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
443-885 5 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
443-885 6 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
443-885 7 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
443-885 8 Baltimore MD 9212 VERIZON MARYLAND, INC. 238      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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