Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 667 [Rate centres in NPA 667] [Dial plan for NPA 667]

NXX: 488

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-488 A Salisbury MD SLBRMDXZ4MD  475J CALLWORKS CORPORATION 242   2024-07-11   
667-488 1 Salisbury MD SLBRMDXZ4MD  475J CALLWORKS CORPORATION 242   2024-07-11   

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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