Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
227-222 5 Washington Zone 16 MD 876D ONVOY, LLC - MD 236   2025-05-10   
227-222 8 Washington Zone 16 MD 876D ONVOY, LLC - MD 236   2025-03-09   
227-222 9 Washington Zone 16 MD 876D ONVOY, LLC - MD 236   2024-11-10   
227-227 A Gaithersburg MD 876D ONVOY, LLC - MD 236   2024-03-30   
227-227 0 Gaithersburg MD 876D ONVOY, LLC - MD 236   2024-03-30   
227-227 1 Gaithersburg MD 876D ONVOY, LLC - MD 236   2024-03-30   
227-227 2 Gaithersburg MD 876D ONVOY, LLC - MD 236   2024-03-31   
227-227 6 Gaithersburg MD 876D ONVOY, LLC - MD 236   2024-04-13   
227-227 8 Gaithersburg MD 876D ONVOY, LLC - MD 236   2024-04-04   
227-227 9 Gaithersburg MD 876D ONVOY, LLC - MD 236   2024-04-04   
227-228 A Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2024-03-30   
227-228 0 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2024-03-30   
227-228 1 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2024-03-30   
227-228 2 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2024-03-30   
227-229 A Washington Zone 4 MD 876D ONVOY, LLC - MD 236   2024-03-30   
227-229 0 Washington Zone 4 MD 876D ONVOY, LLC - MD 236   2024-03-30   
227-229 1 Washington Zone 4 MD 876D ONVOY, LLC - MD 236   2024-03-30   
227-229 2 Washington Zone 4 MD 876D ONVOY, LLC - MD 236   2024-03-30   
227-229 3 Washington Zone 4 MD 876D ONVOY, LLC - MD 236   2024-03-30   
227-230 A Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2024-03-30   
227-230 0 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2024-03-30   
227-230 1 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2025-11-08   
227-230 2 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2025-11-28   
227-230 3 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2026-06-22   
227-230 4 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2024-07-05   
227-230 5 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2024-07-27   
227-230 6 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2024-07-27   
227-230 9 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2025-09-28   
227-231 A Washington Zone 6 MD 876D ONVOY, LLC - MD 236   2024-03-30   
227-231 0 Washington Zone 6 MD 876D ONVOY, LLC - MD 236   2024-03-30   
227-231 1 Washington Zone 6 MD 876D ONVOY, LLC - MD 236   2024-03-30   
227-231 2 Washington Zone 6 MD 876D ONVOY, LLC - MD 236   2024-03-30   
227-231 3 Washington Zone 6 MD 876D ONVOY, LLC - MD 236   2024-03-30   
227-231 9 Washington Zone 6 MD 876D ONVOY, LLC - MD 236   2025-10-12   
227-232 A Laurel MD 876D ONVOY, LLC - MD 236   2024-04-05   
227-232 0 Laurel MD 876D ONVOY, LLC - MD 236   2024-04-05   
227-232 1 Laurel MD 876D ONVOY, LLC - MD 236   2024-04-05   
227-232 2 Laurel MD 876D ONVOY, LLC - MD 236   2024-04-05   
227-232 3 Laurel MD 876D ONVOY, LLC - MD 236   2024-04-05   
227-232 4 Laurel MD 876D ONVOY, LLC - MD 236   2024-04-05   
227-232 7 Laurel MD 876D ONVOY, LLC - MD 236   2024-08-24   
227-232 9 Laurel MD 876D ONVOY, LLC - MD 236   2024-12-17   
227-233 4 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2024-07-05   
227-234 A Leonardtown MD 876D ONVOY, LLC - MD 236   2024-04-29   
227-234 0 Leonardtown MD 876D ONVOY, LLC - MD 236   2024-04-29   
227-238 0 Washington Zone 14 MD 876D ONVOY, LLC - MD 236   2024-07-12   
227-238 1 Washington Zone 14 MD 876D ONVOY, LLC - MD 236   2024-07-12   
227-238 2 Washington Zone 14 MD 876D ONVOY, LLC - MD 236   2024-07-12   
227-238 7 Washington Zone 14 MD 876D ONVOY, LLC - MD 236   2024-11-04   
227-240 5 Washington Zone 11 MD 876D ONVOY, LLC - MD 236   2025-03-09   
227-240 6 Washington Zone 11 MD 876D ONVOY, LLC - MD 236   2024-07-22   
227-240 7 Washington Zone 11 MD 876D ONVOY, LLC - MD 236   2025-01-09   
227-240 8 Washington Zone 11 MD 876D ONVOY, LLC - MD 236   2024-07-22   
227-240 9 Washington Zone 11 MD 876D ONVOY, LLC - MD 236   2024-07-22   
227-243 A Ashton MD 876D ONVOY, LLC - MD 236   2024-08-03   
227-243 0 Ashton MD 876D ONVOY, LLC - MD 236   2024-08-03   
227-243 9 Ashton MD 876D ONVOY, LLC - MD 236   2025-04-06   
227-245 A Gaithersburg MD 876D ONVOY, LLC - MD 236   2024-08-04   
227-245 0 Gaithersburg MD 876D ONVOY, LLC - MD 236   2024-08-04   
227-246 0 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2024-08-12   
227-246 1 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2024-10-04   
227-246 2 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2024-10-04   
227-246 3 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2024-10-21   
227-248 A Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2024-08-24   
227-248 0 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2024-08-24   
227-248 8 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2024-10-04   
227-250 A Washington Zone 10 MD 876D ONVOY, LLC - MD 236   2024-09-21   
227-250 0 Washington Zone 10 MD 876D ONVOY, LLC - MD 236   2024-09-21   
227-251 0 Washington Zone 10 MD 876D ONVOY, LLC - MD 236   2024-11-23   
227-255 2 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2024-12-08   
227-256 A Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2024-12-05   
227-256 0 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2024-12-05   
227-257 A Washington Zone 14 MD 876D ONVOY, LLC - MD 236   2024-12-05   
227-257 0 Washington Zone 14 MD 876D ONVOY, LLC - MD 236   2024-12-05   
227-257 1 Washington Zone 14 MD 876D ONVOY, LLC - MD 236   2024-12-14   
227-257 2 Washington Zone 14 MD 876D ONVOY, LLC - MD 236   2025-04-06   
227-257 3 Washington Zone 14 MD 876D ONVOY, LLC - MD 236   2025-05-10   
227-257 4 Washington Zone 14 MD 876D ONVOY, LLC - MD 236   2025-11-28   
227-257 5 Washington Zone 14 MD 876D ONVOY, LLC - MD 236   2026-06-13   
227-257 8 Washington Zone 14 MD 876D ONVOY, LLC - MD 236   2025-10-12   
227-257 9 Washington Zone 14 MD 876D ONVOY, LLC - MD 236   2025-09-06   
227-258 0 Gaithersburg MD 876D ONVOY, LLC - MD 236   2025-09-06   
227-258 1 Gaithersburg MD 876D ONVOY, LLC - MD 236   2025-01-06   
227-258 2 Gaithersburg MD 876D ONVOY, LLC - MD 236   2025-03-02   
227-258 3 Gaithersburg MD 876D ONVOY, LLC - MD 236   2025-05-03   
227-258 4 Gaithersburg MD 876D ONVOY, LLC - MD 236   2025-05-03   
227-258 6 Gaithersburg MD 876D ONVOY, LLC - MD 236   2025-11-08   
227-258 7 Gaithersburg MD 876D ONVOY, LLC - MD 236   2025-11-08   
227-263 1 Waldorf MD 876D ONVOY, LLC - MD 236   2025-02-03   
227-263 6 Waldorf MD 876D ONVOY, LLC - MD 236   2025-03-09   
227-263 7 Waldorf MD 876D ONVOY, LLC - MD 236   2025-03-09   
227-264 8 Washington Zone 10 MD 876D ONVOY, LLC - MD 236   2025-02-04   
227-265 A Washington Zone 3 MD 876D ONVOY, LLC - MD 236   2025-02-06   
227-265 0 Washington Zone 3 MD 876D ONVOY, LLC - MD 236   2025-02-06   
227-265 1 Washington Zone 3 MD 876D ONVOY, LLC - MD 236   2025-02-06   
227-265 2 Washington Zone 3 MD 876D ONVOY, LLC - MD 236   2025-02-06   
227-268 A Laurel MD 876D ONVOY, LLC - MD 236   2025-03-01   
227-268 0 Laurel MD 876D ONVOY, LLC - MD 236   2025-03-01   
227-269 A Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2025-03-01   
227-269 0 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2025-03-01   

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

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