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: ANNPMDANDS0

Remotes:

Switch Switch name Switch type
GLVLMDGLRS1  GALESVILLE  5ER 
MAYOMDMYRS1  MAYO  EXM 
STMRMDSMRS1  SAINT MARGARETS  EXM 

<< 1 2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-626 5 Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
410-626 6 Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
410-626 9 Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
410-990 A Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
443-476 A Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
443-482 A Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
443-482 0 Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
443-482 1 Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
443-482 2 Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
443-482 3 Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
443-482 7 Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
443-482 8 Annapolis MD 9212 VERIZON MARYLAND, INC. 238      
443-482 9 Annapolis MD 9212 VERIZON MARYLAND, INC. 238      

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Last updated: Sun, 17 May 2026 03:26:51 UTC

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