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: 289

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
227-289 A Waldorf MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2025-10-11   
227-289 0 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2025-12-15   
227-289 3 Waldorf MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2026-06-22   
227-289 4 Waldorf MD WASHDC127MD  073H TELNYX LLC 236   2026-02-08   
227-289 5 Waldorf MD CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-07-24   
227-289 6 Waldorf MD WASHDC127MD  073H TELNYX LLC 236   2026-06-01   
227-289 7 Waldorf MD CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-01   
227-289 8 Waldorf MD CHCHMDBEWMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-01   
227-289 9 Waldorf MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2025-10-11   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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