Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 227 [Rate centres in NPA 227] [Dial plan for NPA 227]

NXX: 320

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
227-320 A Laurel MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-10-30   
227-320 0 Laurel MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2026-11-02   
227-320 1 Laurel MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2026-11-02   
227-320 2 Laurel MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2026-11-02   
227-320 3 Laurel MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2026-11-02   
227-320 4 Laurel MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2026-11-02   
227-320 5 Laurel MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2026-11-02   
227-320 6 Laurel MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2026-11-02   
227-320 7 Laurel MD   820C INTRADO COMMUNICATIONS, LLC 236   2026-11-02   
227-320 8 Laurel MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-10-30   
227-320 9 Laurel MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-10-30   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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