Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 302 [Rate centres in NPA 302] [Dial plan for NPA 302]

NXX: 378

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
302-378 A Middletown DE MDTWDEMTDS1  9210 VERIZON DELAWARE, INC. 228      

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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