Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: SLSPMD913MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
227-205 3 Washington Zone 4 MD 939H COMMIO, LLC 236   2023-12-21   
227-205 4 Washington Zone 4 MD 939H COMMIO, LLC 236   2023-12-21   
227-205 5 Washington Zone 4 MD 939H COMMIO, LLC 236   2023-12-21   
227-205 6 Washington Zone 4 MD 939H COMMIO, LLC 236   2023-12-21   
227-206 0 Washington Zone 5 MD 939H COMMIO, LLC 236   2023-12-23   
227-206 1 Washington Zone 5 MD 939H COMMIO, LLC 236   2023-12-23   
227-206 2 Washington Zone 5 MD 939H COMMIO, LLC 236   2023-12-23   
227-206 3 Washington Zone 5 MD 939H COMMIO, LLC 236   2023-12-23   
227-220 0 Waldorf MD 939H COMMIO, LLC 236   2024-01-08   
227-220 1 Waldorf MD 939H COMMIO, LLC 236   2024-01-08   
227-220 2 Waldorf MD 939H COMMIO, LLC 236   2024-01-08   
227-220 3 Waldorf MD 939H COMMIO, LLC 236   2024-01-08   
240-368 0 Waldorf MD 939H COMMIO, LLC 236   2021-10-14   
240-368 1 Waldorf MD 939H COMMIO, LLC 236   2021-10-14   
240-368 2 Waldorf MD 939H COMMIO, LLC 236   2021-10-14   
240-368 8 Waldorf MD 939H COMMIO, LLC 236   2021-10-14   
240-400 3 Washington Zone 2 MD 939H COMMIO, LLC 236   2023-12-23   
240-400 9 Washington Zone 2 MD 939H COMMIO, LLC 236   2023-12-23   
240-445 9 Washington Zone 2 MD 939H COMMIO, LLC 236   2023-12-23   
240-519 9 Washington Zone 2 MD 939H COMMIO, LLC 236   2023-12-23   
240-597 2 Gaithersburg MD 939H COMMIO, LLC 236   2021-07-12   
240-721 7 Washington Zone 5 MD 939H COMMIO, LLC 236   2021-09-16   
240-721 9 Washington Zone 5 MD 939H COMMIO, LLC 236   2021-10-11   
240-767 8 Washington Zone 5 MD 939H COMMIO, LLC 236   2021-09-16   
240-780 9 Gaithersburg MD 939H COMMIO, LLC 236   2021-07-12   
240-788 9 Washington Zone 5 MD 939H COMMIO, LLC 236   2021-09-04   
240-794 0 Lexington Park-Great Mills MD 939H COMMIO, LLC 236   2022-12-04   
240-867 A Washington Zone 3 MD 939H COMMIO, LLC 236      
240-867 5 Washington Zone 3 MD 939H COMMIO, LLC 236   2017-08-11   
240-880 0 Washington Zone 11 MD 939H COMMIO, LLC 236   2021-08-29   
240-880 5 Washington Zone 11 MD 939H COMMIO, LLC 236   2021-08-29   
240-880 6 Washington Zone 11 MD 939H COMMIO, LLC 236   2021-08-29   
240-880 9 Washington Zone 11 MD 939H COMMIO, LLC 236   2021-08-29   
240-898 0 Washington Zone 4 MD 939H COMMIO, LLC 236   2021-08-29   
240-898 1 Washington Zone 4 MD 939H COMMIO, LLC 236   2021-08-29   
240-898 3 Washington Zone 4 MD 939H COMMIO, LLC 236   2021-08-29   
240-906 8 Washington Zone 4 MD 939H COMMIO, LLC 236   2021-09-16   
240-939 1 Washington Zone 11 MD 939H COMMIO, LLC 236   2023-12-23   
240-939 2 Washington Zone 11 MD 939H COMMIO, LLC 236   2023-12-23   
240-939 6 Washington Zone 11 MD 939H COMMIO, LLC 236   2023-12-23   
240-939 7 Washington Zone 11 MD 939H COMMIO, LLC 236   2023-12-23   
240-939 8 Washington Zone 11 MD 939H COMMIO, LLC 236   2023-12-23   
240-948 9 Leonardtown MD 939H COMMIO, LLC 236   2022-10-28   
240-956 0 Washington Zone 2 MD 939H COMMIO, LLC 236   2021-09-04   
240-956 1 Washington Zone 2 MD 939H COMMIO, LLC 236   2021-09-04   
240-956 2 Washington Zone 2 MD 939H COMMIO, LLC 236   2021-09-04   
240-956 3 Washington Zone 2 MD 939H COMMIO, LLC 236   2021-09-04   
240-968 0 Laurel MD 939H COMMIO, LLC 236   2022-12-06   
240-982 1 Gaithersburg MD 939H COMMIO, LLC 236   2023-12-21   
240-982 7 Gaithersburg MD 939H COMMIO, LLC 236   2023-12-21   
301-321 1 Washington Zone 11 MD 939H COMMIO, LLC 236   2021-08-29   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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