Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 443 [Rate centres in NPA 443] [Dial plan for NPA 443]

NXX: 782

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-782 A Annapolis MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-782 0 Annapolis MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-782 1 Annapolis MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2024-06-27   
443-782 2 Annapolis MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-30   
443-782 3 Annapolis MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2017-06-02   
443-782 4 Annapolis MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2018-05-27   
443-782 5 Annapolis MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2018-06-08   
443-782 6 Annapolis MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-28   
443-782 7 Annapolis MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2018-06-15   
443-782 8 Annapolis MD BLTMMDCH3MD  228C IDT AMERICA, CORP. - MD 238   2018-01-14   
443-782 9 Annapolis MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-30   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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