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Woodlawn, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
443-436 2 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-06-05   
443-436 3 WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
443-436 4 WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
443-436 5 WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
443-436 6 WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
443-436 7 WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
443-436 8 WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
443-436 9 WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
443-551 A BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-551 0 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-05-11   
443-551 1 BLTQMD018MD  145J TERRA NOVA TELECOM INC. 238   2024-02-15   
443-551 2 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-07-05   
443-551 3 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2013-05-12   
443-551 4 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-551 5 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-08-11   
443-551 6   876D ONVOY, LLC - MD 238   2025-02-01   
443-551 7   876D ONVOY, LLC - MD 238   2025-02-01   
443-551 8 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-10-21   
443-551 9 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-10-21   
443-658 A BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
443-663 A WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
443-663 0 BLTMMDCH25Z  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238   2015-06-20   
443-663 1 BLTQMD018MD  145J TERRA NOVA TELECOM INC. 238   2024-09-11   
443-663 2   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-02   
443-663 3 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-14   
443-663 4 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2015-10-05   
443-663 5 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-14   
443-663 6 WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
443-663 7 BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-25   
443-663 8 WDLWMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
443-663 9   515J IP HORIZON LLC 238   2016-05-31   
443-729 A   829J PAETEC ITEL, LLC 238   2025-04-01   
443-729 0   829J PAETEC ITEL, LLC 238      
443-729 1   829J PAETEC ITEL, LLC 238      
443-729 2   829J PAETEC ITEL, LLC 238      
443-729 3 BLTMMDCHX7X  073H TELNYX LLC 238   2017-04-25   
443-729 4   829J PAETEC ITEL, LLC 238      
443-729 5   829J PAETEC ITEL, LLC 238      
443-729 6 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2018-12-17   
443-729 7   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-02   
443-729 8   829J PAETEC ITEL, LLC 238      
443-729 9   829J PAETEC ITEL, LLC 238      
443-751 A   829J PAETEC ITEL, LLC 238   2025-04-01   
443-751 0   829J PAETEC ITEL, LLC 238      
443-751 1   829J PAETEC ITEL, LLC 238      
443-751 2   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-02   
443-751 3   829J PAETEC ITEL, LLC 238      
443-751 4   829J PAETEC ITEL, LLC 238      
443-751 5   829J PAETEC ITEL, LLC 238      
443-751 6   829J PAETEC ITEL, LLC 238      

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Last updated: Sun, 17 May 2026 03:26:51 UTC

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