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: 800

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
227-800 A Frederick MD FRDRMDFRXPX  624H ONVOY SPECTRUM, LLC 240   2025-01-02   
227-800 0 Frederick MD FRDRMDFRXPX  624H ONVOY SPECTRUM, LLC 240   2025-01-02   
227-800 1 Frederick MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240   2025-01-21   
227-800 2 Frederick MD FRDRMDFRXPX  624H ONVOY SPECTRUM, LLC 240   2025-01-02   
227-800 3 Frederick MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240   2025-01-21   
227-800 4 Frederick MD   876D ONVOY, LLC - MD 240   2025-04-06   
227-800 5 Frederick MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2025-04-15   
227-800 6 Frederick MD FRDRMDFRXPX  624H ONVOY SPECTRUM, LLC 240   2025-01-02   
227-800 7 Frederick MD   876D ONVOY, LLC - MD 240   2025-03-02   
227-800 8 Frederick MD FRDRMDFRXPX  624H ONVOY SPECTRUM, LLC 240   2025-01-02   
227-800 9 Frederick MD FRDRMDFRXPX  624H ONVOY SPECTRUM, LLC 240   2025-01-02   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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