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
227-274 0 Washington Zone 10 MD   236   2025-05-10   
227-274 1 Washington Zone 10 MD   236   2025-05-10   
227-275 6 Washington Zone 4 MD   236   2025-11-08   
227-275 7 Washington Zone 4 MD   236   2025-11-08   
227-275 8 Washington Zone 4 MD   236   2025-11-08   
227-275 9 Washington Zone 4 MD   236   2025-09-06   
227-276 A Washington Zone 3 MD   236   2025-06-06   
227-276 0 Washington Zone 3 MD   236   2025-06-06   
227-276 1 Washington Zone 3 MD   236   2025-06-06   
227-276 2 Washington Zone 3 MD   236   2025-11-08   
227-276 3 Washington Zone 3 MD   236   2025-11-08   
227-276 4 Washington Zone 3 MD   236   2025-11-28   
227-276 5 Washington Zone 3 MD   236   2026-01-11   
227-277 7 Gaithersburg MD   236   2025-11-08   
227-278 3 Waldorf MD   236   2026-01-11   
227-281 6 Frederick MD   240   2026-01-04   
227-281 7 Frederick MD   240   2025-10-12   
227-284 4 Laurel MD   236   2025-10-12   
227-284 7 Laurel MD   236   2025-09-06   
227-288 A Hagerstown MD   240   2025-10-04   
227-288 0 Hagerstown MD   240   2025-10-04   
227-288 1 Hagerstown MD   240   2025-10-04   
227-288 7 Hagerstown MD   240   2025-10-18   
227-288 8 Hagerstown MD   240   2025-10-18   
227-288 9 Hagerstown MD   240   2025-10-18   
227-290 5 Laurel MD   236   2026-01-04   
227-292 3 Ashton MD   236   2025-12-14   
227-293 0 Cumberland MD   240   2025-12-14   
227-294 A Washington Zone 13 MD   236   2025-12-26   
227-294 0 Washington Zone 13 MD   236   2025-12-26   
227-294 1 Washington Zone 13 MD   236   2025-12-26   
227-294 2 Washington Zone 13 MD   236   2025-12-26   
227-294 8 Washington Zone 13 MD   236   2026-01-11   
227-294 9 Washington Zone 13 MD   236   2026-01-11   
227-296 A Washington Zone 12 MD   236   2026-03-23   
227-296 0 Washington Zone 12 MD   236   2026-03-23   
227-300 0 Ashton MD   236   2026-01-12   
227-303 0 Washington Zone 10 MD   236   2025-12-19   
227-303 2 Washington Zone 10 MD   236   2026-01-11   
227-333 A Washington Zone 16 MD   236   2025-10-16   
227-333 0 Washington Zone 16 MD   236   2025-10-17   
227-333 3 Washington Zone 16 MD   236   2025-10-16   
227-333 4 Washington Zone 16 MD   236   2025-10-16   
227-333 5 Washington Zone 16 MD   236   2025-10-16   
227-333 6 Washington Zone 16 MD   236   2025-10-16   
227-334 0 Keedysville MD   240   2025-10-12   
227-368 0 Mechanicsville MD VINNVACBDS0  236   2024-03-07   
227-368 1 Mechanicsville MD   236   2025-10-12   
227-444 A Washington Zone 2 MD   236   2025-10-16   
227-444 4 Washington Zone 2 MD   236   2025-10-16   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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