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: CMLDMDCMDS0

Remotes:

Switch Switch name Switch type
BTNRMDBRRS1  BITTINGER  RSC 
FIVLMDFRRS0  FRIENDSVILLE  RSC 
FLNTMDFSRS0  FLINTSTONE  RSC 
GTVLMDGRRS0  GRANTSVILLE  RSC 
KTZMMDKMRS0  KITZMILLER  RSC 
LNCNMDLNRS0  LONACONING  RSC 
MTSVMDMSRS0  MOUNT SAVAGE  RSC 
OLTWMDOTRS0  OLDTOWN  RSC 
THVLMDTVRS0  THAYERVILLE  RSC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
240-964 A Cumberland MD 9212 VERIZON MARYLAND, INC. 240      
301-359 A Westernport MD 9212 VERIZON MARYLAND, INC. 240      
301-722 A Cumberland MD 9212 VERIZON MARYLAND, INC. 240      
301-723 A Cumberland MD 9212 VERIZON MARYLAND, INC. 240      
301-724 A Cumberland MD 9212 VERIZON MARYLAND, INC. 240      
301-759 A Cumberland MD 9212 VERIZON MARYLAND, INC. 240      
301-777 A Cumberland MD 9212 VERIZON MARYLAND, INC. 240      
301-784 A Cumberland MD 9212 VERIZON MARYLAND, INC. 240      

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

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