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: THRMMDTHRS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
301-271 A Thurmont MD 9212 VERIZON MARYLAND, INC. 240      
301-271 0 Thurmont MD 9212 VERIZON MARYLAND, INC. 240      
301-271 1 Thurmont MD 9212 VERIZON MARYLAND, INC. 240      
301-271 2 Thurmont MD 9212 VERIZON MARYLAND, INC. 240      
301-271 3 Thurmont MD 9212 VERIZON MARYLAND, INC. 240      
301-271 4 Thurmont MD 9212 VERIZON MARYLAND, INC. 240      
301-271 5 Thurmont MD 9212 VERIZON MARYLAND, INC. 240      
301-271 6 Thurmont MD 9212 VERIZON MARYLAND, INC. 240      
301-271 7 Thurmont MD 9212 VERIZON MARYLAND, INC. 240      
301-271 9 Thurmont MD 9212 VERIZON MARYLAND, INC. 240      

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.