Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 301 [Rate centres in NPA 301] [Dial plan for NPA 301]

NXX: 271

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-271 A Thurmont MD THRMMDTHRS0  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 8 Thurmont MD   2593 CORE COMMUNICATIONS, INC.- MD 240   2004-03-28   
301-271 9 Thurmont MD   9212 VERIZON MARYLAND, INC. 240      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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