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: 408

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-408 A Washington Zone 3 MD HYVLMDRIDS0  9212 VERIZON MARYLAND, INC. 236      
301-408 0 Washington Zone 3 MD HYVLMDRIDS0  9212 VERIZON MARYLAND, INC. 236      
301-408 1 Washington Zone 3 MD HYVLMDRIDS0  9212 VERIZON MARYLAND, INC. 236      
301-408 2 Washington Zone 3 MD HYVLMDRIDS0  9212 VERIZON MARYLAND, INC. 236      
301-408 3 Washington Zone 3 MD HYVLMDRIDS0  9212 VERIZON MARYLAND, INC. 236      
301-408 4 Washington Zone 3 MD HYVLMDRIDS0  9212 VERIZON MARYLAND, INC. 236      
301-408 5 Washington Zone 3 MD HYVLMDRIDS0  9212 VERIZON MARYLAND, INC. 236      
301-408 6 Washington Zone 3 MD BTVLMD12CMA  5562 METROPCS, INC. 236   2011-08-19   
301-408 7 Washington Zone 3 MD HYVLMDRIDS0  9212 VERIZON MARYLAND, INC. 236      
301-408 8 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2003-06-15   
301-408 9 Washington Zone 3 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2007-09-04   

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

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