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Baltimore, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-325 6 BLTMMDFRRP0  9212 VERIZON MARYLAND, INC. 238      
410-325 7 BLTMMDFRRP0  9212 VERIZON MARYLAND, INC. 238      
410-325 8 BLTMMDFRRP0  9212 VERIZON MARYLAND, INC. 238      
410-325 9 BLTMMDFRRP0  9212 VERIZON MARYLAND, INC. 238      
410-327 A BLTMMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
410-328 A BLTMMDCHDS2  9212 VERIZON MARYLAND, INC. 238      
410-332 A BLTMMDCHDS3  9212 VERIZON MARYLAND, INC. 238      
410-333 A BLTMMDCHDS2  9212 VERIZON MARYLAND, INC. 238      
410-336 A CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-338 A BLTMMDUVDS0  9212 VERIZON MARYLAND, INC. 238      
410-338 0 BLTMMDUVDS0  9212 VERIZON MARYLAND, INC. 238      
410-338 1 BLTMMDUVDS0  9212 VERIZON MARYLAND, INC. 238      
410-338 2 BLTMMDUVDS0  9212 VERIZON MARYLAND, INC. 238      
410-338 3 BLTMMDUVDS0  9212 VERIZON MARYLAND, INC. 238      
410-338 4 BLTMMDUVDS0  9212 VERIZON MARYLAND, INC. 238      
410-338 5 BLTMMDUVDS0  9212 VERIZON MARYLAND, INC. 238      
410-338 6 BLTMMDUVDS0  9212 VERIZON MARYLAND, INC. 238      
410-338 7 BLTMMDUVDS0  9212 VERIZON MARYLAND, INC. 238      
410-338 8 BLTMMDUVDS0  9212 VERIZON MARYLAND, INC. 238      
410-338 9   515J IP HORIZON LLC 238   2019-04-26   
410-340 A CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-342 A BLTMMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
410-347 A BLTMMDCHDS3  9212 VERIZON MARYLAND, INC. 238      
410-350 A BRKLMDBKRP0  9212 VERIZON MARYLAND, INC. 238      
410-350 0 BRKLMDBKRP0  9212 VERIZON MARYLAND, INC. 238      
410-350 1 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-12-31   
410-350 2 BRKLMDBKRP0  9212 VERIZON MARYLAND, INC. 238      
410-350 3 BRKLMDBKRP0  9212 VERIZON MARYLAND, INC. 238      
410-350 4 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-03-10   
410-350 5 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-03-10   
410-350 6 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-03-10   
410-350 7 BRKLMDBKRP0  9212 VERIZON MARYLAND, INC. 238      
410-350 8 BRKLMDBKRP0  9212 VERIZON MARYLAND, INC. 238      
410-350 9 CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-12-31   
410-351 A HNVAMDAE3MD  6630 SPOK, INC. 238      
410-354 A BRKLMDBKRP0  9212 VERIZON MARYLAND, INC. 238      
410-355 A BRKLMDBKRP0  9212 VERIZON MARYLAND, INC. 238      
410-358 A PIVLMDPKDS1  9212 VERIZON MARYLAND, INC. 238      
410-359 A BLTMMDCHDS2  9212 VERIZON MARYLAND, INC. 238      
410-361 A BLTMMDCHDS2  9212 VERIZON MARYLAND, INC. 238      
410-361 0 BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-02-20   
410-361 1 BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-02-20   
410-361 2 BLTMMDCHDS2  9212 VERIZON MARYLAND, INC. 238      
410-361 3 BLTMMDCHDS2  9212 VERIZON MARYLAND, INC. 238      
410-361 4 BLTMMDCHDS2  9212 VERIZON MARYLAND, INC. 238      
410-361 5 BLTMMDCHDS2  9212 VERIZON MARYLAND, INC. 238      
410-361 6 BLTMMDCHDS2  9212 VERIZON MARYLAND, INC. 238      
410-361 7 BLTMMDCHDS2  9212 VERIZON MARYLAND, INC. 238      
410-361 8 BLTMMDCHDS2  9212 VERIZON MARYLAND, INC. 238      
410-361 9 BLTMMDCHDS2  9212 VERIZON MARYLAND, INC. 238      

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Last updated: Tue, 29 Sep 2026 03:00:13 UTC

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