Local Calling Guide

Area code/prefix search

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OCN: 876D ONVOY, LLC - MD

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
227-247 A Thurmont MD CMLDMDCMEMD  240   2024-08-15   
227-247 0 Thurmont MD CMLDMDCMEMD  240   2024-08-15   
227-248 A Washington Zone 2 MD VINNVACBDS0  236   2024-08-24   
227-248 0 Washington Zone 2 MD VINNVACBDS0  236   2024-08-24   
227-248 8 Washington Zone 2 MD VINNVACBDS0  236   2024-10-04   
227-249 1 Washington Zone 4 MD   236   2024-09-15   
227-250 A Washington Zone 10 MD VINNVACBDS0  236   2024-09-21   
227-250 0 Washington Zone 10 MD VINNVACBDS0  236   2024-09-21   
227-251 0 Washington Zone 10 MD VINNVACBDS0  236   2024-11-23   
227-253 A Frederick MD CMLDMDCMEMD  240   2024-11-17   
227-253 0 Frederick MD CMLDMDCMEMD  240   2024-11-17   
227-253 4 Frederick MD CMLDMDCMEMD  240   2024-11-18   
227-255 2 Washington Zone 5 MD VINNVACBDS0  236   2024-12-08   
227-256 A Washington Zone 2 MD VINNVACBDS0  236   2024-12-05   
227-256 0 Washington Zone 2 MD VINNVACBDS0  236   2024-12-05   
227-257 A Washington Zone 14 MD VINNVACBDS0  236   2024-12-05   
227-257 0 Washington Zone 14 MD VINNVACBDS0  236   2024-12-05   
227-257 1 Washington Zone 14 MD VINNVACBDS0  236   2024-12-14   
227-257 2 Washington Zone 14 MD VINNVACBDS0  236   2025-04-06   
227-257 3 Washington Zone 14 MD VINNVACBDS0  236   2025-05-10   
227-257 4 Washington Zone 14 MD VINNVACBDS0  236   2025-11-28   
227-257 5 Washington Zone 14 MD VINNVACBDS0  236   2026-06-13   
227-257 6 Washington Zone 14 MD   236   2026-08-21   
227-257 7 Washington Zone 14 MD   236   2026-08-21   
227-257 8 Washington Zone 14 MD VINNVACBDS0  236   2025-10-12   
227-257 9 Washington Zone 14 MD VINNVACBDS0  236   2025-09-06   
227-258 0 Gaithersburg MD VINNVACBDS0  236   2025-09-06   
227-258 1 Gaithersburg MD VINNVACBDS0  236   2025-01-06   
227-258 2 Gaithersburg MD VINNVACBDS0  236   2025-03-02   
227-258 3 Gaithersburg MD VINNVACBDS0  236   2025-05-03   
227-258 4 Gaithersburg MD VINNVACBDS0  236   2025-05-03   
227-258 6 Gaithersburg MD VINNVACBDS0  236   2025-11-08   
227-258 7 Gaithersburg MD VINNVACBDS0  236   2025-11-08   
227-260 A Washington Zone 15 (Baltimore LATA) MD BLTMMDCH42Z  238   2025-01-11   
227-260 0 Washington Zone 15 (Baltimore LATA) MD BLTMMDCH42Z  238   2025-01-11   
227-260 1 Washington Zone 15 (Baltimore LATA) MD BLTMMDCH42Z  238   2025-03-09   
227-260 2 Washington Zone 15 (Baltimore LATA) MD BLTMMDCH42Z  238   2025-04-06   
227-263 1 Waldorf MD VINNVACBDS0  236   2025-02-03   
227-263 6 Waldorf MD VINNVACBDS0  236   2025-03-09   
227-263 7 Waldorf MD VINNVACBDS0  236   2025-03-09   
227-264 8 Washington Zone 10 MD VINNVACBDS0  236   2025-02-04   
227-265 A Washington Zone 3 MD VINNVACBDS0  236   2025-02-06   
227-265 0 Washington Zone 3 MD VINNVACBDS0  236   2025-02-06   
227-265 1 Washington Zone 3 MD VINNVACBDS0  236   2025-02-06   
227-265 2 Washington Zone 3 MD VINNVACBDS0  236   2025-02-06   
227-268 A Laurel MD VINNVACBDS0  236   2025-03-01   
227-268 0 Laurel MD VINNVACBDS0  236   2025-03-01   
227-268 9 Laurel MD   236   2026-09-17   
227-269 A Washington Zone 5 MD VINNVACBDS0  236   2025-03-01   
227-269 0 Washington Zone 5 MD VINNVACBDS0  236   2025-03-01   

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

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