Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 410 [Rate centres in NPA 410] [Dial plan for NPA 410]

NXX: 421

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-421 A Severna Park MD SVPKMDSPDS0  9212 VERIZON MARYLAND, INC. 238      
410-421 0 Severna Park MD   876D ONVOY, LLC - MD 238      
410-421 1 Severna Park MD   876D ONVOY, LLC - MD 238      
410-421 2 Severna Park MD BLTQMD012MD  964H BARR TELL USA, INC. 238      
410-421 3 Severna Park MD   2593 CORE COMMUNICATIONS, INC.- MD 238      
410-421 4 Severna Park MD   2593 CORE COMMUNICATIONS, INC.- MD 238      
410-421 5 Severna Park MD SVPKMDSPDS0  9212 VERIZON MARYLAND, INC. 238      
410-421 6 Severna Park MD   2593 CORE COMMUNICATIONS, INC.- MD 238      
410-421 7 Severna Park MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
410-421 8 Severna Park MD SVPKMDSPDS0  9212 VERIZON MARYLAND, INC. 238      
410-421 9 Severna Park MD SVPKMDSPDS0  9212 VERIZON MARYLAND, INC. 238      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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