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: 744

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-744 A Catonsville MD CTVLMDCTDS0  9212 VERIZON MARYLAND, INC. 238      

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

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