Local Calling Guide

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NPA: 443 [Rate centres in NPA 443] [Dial plan for NPA 443]

NXX: 508

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-508 A Hampstead MD HNVAMDBHAMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-508 0 Hampstead MD HNVAMDBHAMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-508 1 Hampstead MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2004-12-27   
443-508 2 Hampstead MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2013-02-17   
443-508 3 Hampstead MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2009-01-05   
443-508 4 Hampstead MD HMPSMDHERS1  9212 VERIZON MARYLAND, INC. 238   2004-10-07   
443-508 5 Hampstead MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-508 6 Hampstead MD BLTMMDCHXMX  506J TWILIO INTERNATIONAL, INC. 238   2020-12-26   
443-508 7 Hampstead MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-07   
443-508 8 Hampstead MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-25   
443-508 9 Hampstead MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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