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
667-339 3 Sykesville MD   238   2021-10-31   
667-339 8 Sykesville MD   238   2022-10-16   
667-339 9 Sykesville MD   238   2023-08-10   
667-340 A Churchville MD BLTMMDCH42Z  238      
667-340 2 Churchville MD   238   2021-10-31   
667-340 3 Churchville MD   238   2021-10-31   
667-340 5 Churchville MD   238   2021-12-19   
667-340 7 Churchville MD   238   2024-05-03   
667-341 A Delmar MD SLBRMDSBXVX  242      
667-341 0 Delmar MD   242   2022-11-28   
667-341 2 Delmar MD   242   2021-10-31   
667-341 5 Delmar MD   242   2021-12-20   
667-341 6 Delmar MD   242   2021-12-20   
667-342 A Preston MD SLBRMDSBXVX  242      
667-342 2 Preston MD   242   2021-10-31   
667-342 3 Preston MD   242   2021-12-20   
667-342 5 Preston MD   242   2022-12-03   
667-342 8 Preston MD   242   2022-12-24   
667-342 9 Preston MD   242   2023-06-17   
667-345 5 Catonsville MD   238   2021-05-21   
667-345 8 Catonsville MD   238   2021-04-29   
667-345 9 Catonsville MD   238   2021-04-29   
667-347 A Federalsburg MD SLBRMDSBXVX  242      
667-347 0 Federalsburg MD   242   2021-05-18   
667-347 1 Federalsburg MD   242   2021-05-18   
667-347 2 Federalsburg MD   242   2021-07-12   
667-347 6 Federalsburg MD   242   2021-05-17   
667-347 7 Federalsburg MD   242   2021-05-21   
667-347 8 Federalsburg MD   242   2021-05-21   
667-348 A Ridgely MD SLBRMDSBXVX  242      
667-348 2 Ridgely MD   242   2021-10-31   
667-348 3 Ridgely MD   242   2021-12-20   
667-349 A Still Pond MD SLBRMDSBXVX  242      
667-349 2 Still Pond MD   242   2021-10-31   
667-349 3 Still Pond MD   242   2021-12-20   
667-350 A Wingate MD SLBRMDSBXVX  242      
667-350 2 Wingate MD   242   2021-10-31   
667-350 3 Wingate MD   242   2021-12-20   
667-353 4 Cardiff MD   238   2021-03-04   
667-353 5 Cardiff MD   238   2021-03-04   
667-353 7 Cardiff MD   238   2021-12-19   
667-356 A Severn MD BLTMMDCH42Z  238      
667-356 4 Severn MD   238   2021-07-12   
667-356 5 Severn MD   238   2021-07-12   
667-356 6 Severn MD   238   2021-09-25   
667-356 7 Severn MD   238   2021-05-22   
667-357 A Greensboro MD SLBRMDSBXVX  242      
667-357 0 Greensboro MD   242   2021-05-18   
667-357 2 Greensboro MD   242   2021-09-25   
667-357 6 Greensboro MD   242   2021-05-17   

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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