Local Calling Guide

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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
227-313 8 Washington Zone 5 MD   236   2026-09-29   
227-313 9 Washington Zone 5 MD   236   2026-09-29   
227-314 1 Waldorf MD   236   2026-10-05   
227-314 2 Waldorf MD   236   2026-10-05   
227-314 3 Waldorf MD   236   2026-10-05   
227-315 1 Ashton MD   236   2026-08-23   
227-315 8 Ashton MD   236   2026-07-24   
227-316 A Brunswick MD   240   2026-10-03   
227-316 0 Brunswick MD   240   2026-10-03   
227-317 A Frederick MD   240   2026-10-03   
227-317 0 Frederick MD   240   2026-10-03   
227-321 A Washington Zone 4 MD   236   2026-10-26   
227-321 0 Washington Zone 4 MD   236   2026-10-26   
227-333 A Washington Zone 16 MD VINNVACBDS0  236   2025-10-16   
227-333 0 Washington Zone 16 MD VINNVACBDS0  236   2025-10-17   
227-333 1 Washington Zone 16 MD VINNVACBDS0  236   2026-05-08   
227-333 3 Washington Zone 16 MD VINNVACBDS0  236   2025-10-16   
227-333 4 Washington Zone 16 MD VINNVACBDS0  236   2025-10-16   
227-333 5 Washington Zone 16 MD VINNVACBDS0  236   2025-10-16   
227-333 6 Washington Zone 16 MD VINNVACBDS0  236   2025-10-16   
227-333 7 Washington Zone 16 MD   236   2026-09-28   
227-333 8 Washington Zone 16 MD   236   2026-09-28   
227-334 0 Keedysville MD CMLDMDCMEMD  240   2025-10-12   
227-334 1 Keedysville MD CMLDMDCMEMD  240   2026-06-22   
227-368 0 Mechanicsville MD VINNVACBDS0  236   2024-03-07   
227-368 1 Mechanicsville MD VINNVACBDS0  236   2025-10-12   
227-368 8 Mechanicsville MD   236   2026-10-08   
227-444 A Washington Zone 2 MD VINNVACBDS0  236   2025-10-16   
227-444 4 Washington Zone 2 MD VINNVACBDS0  236   2025-10-16   
227-444 5 Washington Zone 2 MD VINNVACBDS0  236   2025-10-16   
227-444 6 Washington Zone 2 MD VINNVACBDS0  236   2025-10-16   
227-444 7 Washington Zone 2 MD VINNVACBDS0  236   2025-10-16   
227-444 8 Washington Zone 2 MD VINNVACBDS0  236   2025-10-19   
227-444 9 Washington Zone 2 MD VINNVACBDS0  236   2025-10-19   
227-500 2 Gaithersburg MD   236   2026-08-20   
227-500 3 Gaithersburg MD   236   2026-08-20   
227-500 4 Gaithersburg MD   236   2026-08-20   
227-500 5 Gaithersburg MD   236   2026-08-20   
227-500 6 Gaithersburg MD   236   2026-08-31   
227-500 9 Gaithersburg MD VINNVACBDS0  236   2026-05-30   
227-529 A Gaithersburg MD VINNVACBDS0  236   2026-02-20   
227-529 0 Gaithersburg MD VINNVACBDS0  236   2026-02-20   
227-529 2 Gaithersburg MD   236   2026-09-28   
227-529 3 Gaithersburg MD   236   2026-09-28   
227-529 9 Gaithersburg MD VINNVACBDS0  236   2026-02-20   
227-666 A Frederick MD CMLDMDCMEMD  240   2026-02-17   
227-666 0 Frederick MD CMLDMDCMEMD  240   2026-02-17   
227-666 2 Frederick MD   240   2026-09-05   
227-666 3 Frederick MD   240   2026-09-05   
227-666 4 Frederick MD   240   2026-09-05   

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Last updated: Tue, 29 Sep 2026 03:00:13 UTC

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