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NPA: 410 [Rate centres in NPA 410] [Dial plan for NPA 410]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-334 7 Salisbury MD   9212 VERIZON MARYLAND, INC. 242      
410-334 8 Salisbury MD   551G NUSO, LLC 242   2017-11-12   
410-334 9 Salisbury MD   551G NUSO, LLC 242   2017-11-12   
410-335 A Chase MD CHASMDCHRP0  9212 VERIZON MARYLAND, INC. 238      
410-336 A Baltimore MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-337 A Towson MD TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-338 A Baltimore MD BLTMMDUVDS0  9212 VERIZON MARYLAND, INC. 238      
410-338 0 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-338 1 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-338 2 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-338 3 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-338 4 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-338 5 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-338 6 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-338 7 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-338 8 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-338 9 Baltimore MD   515J IP HORIZON LLC 238   2019-04-26   
410-339 A Towson MD TWSNMDTWDS0  9212 VERIZON MARYLAND, INC. 238      
410-339 0 Towson MD   876D ONVOY, LLC - MD 238   2024-02-19   
410-339 1 Towson MD   876D ONVOY, LLC - MD 238   2016-03-31   
410-339 2 Towson MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2019-01-10   
410-339 3 Towson MD   9212 VERIZON MARYLAND, INC. 238      
410-339 4 Towson MD   9212 VERIZON MARYLAND, INC. 238      
410-339 5 Towson MD   9212 VERIZON MARYLAND, INC. 238      
410-339 6 Towson MD   9212 VERIZON MARYLAND, INC. 238      
410-339 7 Towson MD   9212 VERIZON MARYLAND, INC. 238      
410-339 8 Towson MD   876D ONVOY, LLC - MD 238   2024-02-19   
410-339 9 Towson MD   145J TERRA NOVA TELECOM INC. 238   2024-02-14   
410-340 A Baltimore MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-341 A Salisbury MD SLBRMDSBDS1  9212 VERIZON MARYLAND, INC. 242      
410-342 A Baltimore MD BLTMMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
410-343 A Sparks-Glencoe MD PKTNMDPKRS0  9212 VERIZON MARYLAND, INC. 238      
410-343 0 Sparks-Glencoe MD   9212 VERIZON MARYLAND, INC. 238      
410-343 1 Sparks-Glencoe MD   9212 VERIZON MARYLAND, INC. 238      
410-343 2 Sparks-Glencoe MD   9212 VERIZON MARYLAND, INC. 238      
410-343 3 Sparks-Glencoe MD   9212 VERIZON MARYLAND, INC. 238      
410-343 4 Sparks-Glencoe MD   876D ONVOY, LLC - MD 238   2016-03-31   
410-343 5 Sparks-Glencoe MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2004-04-02   
410-343 6 Sparks-Glencoe MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-30   
410-343 7 Sparks-Glencoe MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-03-05   
410-343 8 Sparks-Glencoe MD   829J PAETEC ITEL, LLC 238   2006-01-31   
410-343 9 Sparks-Glencoe MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
410-344 A Chase MD CHASMDCHRP0  9212 VERIZON MARYLAND, INC. 238      
410-344 0 Chase MD   9212 VERIZON MARYLAND, INC. 238      
410-344 1 Chase MD   9212 VERIZON MARYLAND, INC. 238      
410-344 2 Chase MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-03-13   
410-344 3 Chase MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2014-05-30   
410-344 4 Chase MD   8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238   2015-06-09   
410-344 5 Chase MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2003-06-08   
410-344 6 Chase MD   318J COMCAST IP PHONE, LLC 238   2012-07-21   

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

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