Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
857-504 7 Boston MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2016-03-09   
857-524 A South Boston MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-524 0 South Boston MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-524 5 South Boston MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-557 2 Boston MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2019-12-30   
857-559 A Brighton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-559 0 Brighton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-559 5 Brighton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-559 6 Brighton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-559 7 Brighton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-559 8 Brighton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-588 A Charlestown MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-588 0 Charlestown MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-588 5 Charlestown MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-588 6 Charlestown MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-588 7 Charlestown MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-588 8 Charlestown MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-588 9 Charlestown MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-598 A Milton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-598 0 Milton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-598 1 Milton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-598 3 Milton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-600 3 Cambridge MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2011-06-07   
857-600 4 Cambridge MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2011-06-07   
857-626 A Belmont MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-626 3 Belmont MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2013-11-19   
857-703 4 Hyde Park MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2020-01-02   
857-728 A Jamaica Plain MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-728 0 Jamaica Plain MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-728 5 Jamaica Plain MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-767 4 Boston MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2022-08-01   
857-816 A Winthrop MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-816 0 Winthrop MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-816 1 Winthrop MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-816 4 Winthrop MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
857-957 3 Boston MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2015-07-08   
857-996 A Boston MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
978-202 A Concord MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
978-202 3 Concord MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
978-202 9 Concord MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
978-206 A Acton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
978-206 0 Acton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
978-206 2 Acton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
978-206 3 Acton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
978-206 5 Acton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
978-206 6 Acton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2008-09-15   
978-206 7 Acton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
978-206 9 Acton MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
978-213 7 Topsfield MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2007-11-17   
978-221 A Lowell MA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      

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

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