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: CYVLMDDADS0

Remotes:

Switch Switch name Switch type
MANRMDMNRS0  MANOR  5ER 
PKTNMDPKRS0  PARKTON  5ER 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-229 A Cockeysville MD 9212 VERIZON MARYLAND, INC. 238      
410-316 A Cockeysville MD 9212 VERIZON MARYLAND, INC. 238      
410-329 A Cockeysville MD 9212 VERIZON MARYLAND, INC. 238      
410-393 A Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
410-527 A Cockeysville MD 9212 VERIZON MARYLAND, INC. 238      
410-584 A Cockeysville MD 9212 VERIZON MARYLAND, INC. 238      
410-771 A Cockeysville MD 9212 VERIZON MARYLAND, INC. 238      
410-773 A Cockeysville MD 9212 VERIZON MARYLAND, INC. 238      
410-785 A Cockeysville MD 9212 VERIZON MARYLAND, INC. 238      
410-856 A Baltimore MD 9212 VERIZON MARYLAND, INC. 238      
443-353 A Cockeysville MD 9212 VERIZON MARYLAND, INC. 238      
443-556 A Cockeysville MD 9212 VERIZON MARYLAND, INC. 238      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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