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
240-345 A Ashton (Baltimore LATA) MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
240-708 A Laurel (Baltimore LATA) MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
240-865 A Washington Zone 14 (Baltimore LATA) MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
410-779 A Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-219 A Parkville MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-221 A Annapolis MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-244 A Westminster MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-292 A Crofton MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-295 A Prince Frederick MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-300 A Sykesville MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-341 A Catonsville MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-345 A Aberdeen MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
443-352 A Pikesville MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-354 A Glen Burnie MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-355 A Ellicott City MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-356 A Bel Air MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-371 A Bel Air MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-380 A Woodlawn MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-403 A Aberdeen MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
443-423 A Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-450 A Pikesville MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-472 A Columbia MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-483 A Cardiff MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-484 A Edgewood MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-485 A Elkton MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-486 A Prince Frederick MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-487 A Westminster MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-545 A Columbia MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-550 A North Beach MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-551 A Woodlawn MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-564 A Towson MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-567 A Bel Air MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-569 A Annapolis MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-625 A Fork MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-627 A Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-641 A Pikesville MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-740 A Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-809 A Towson MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-818 A Armiger-Gibson Island MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-832 A Columbia MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-877 A North East MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-898 A Pikesville MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-899 A Waterloo MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-926 A Annapolis MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-927 A Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-964 A North Beach MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-992 A Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
667-251 A Towson MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
667-284 A Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
667-306 A Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
667-401 A Baltimore MD 6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      

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

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