Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 617 [Rate centres in NPA 617] [Dial plan for NPA 617]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
617-500 4 Cambridge MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
617-500 5 Cambridge MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2007-10-25   
617-500 6 Cambridge MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-03-04   
617-500 7 Cambridge MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2004-05-16   
617-500 8 Cambridge MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-03-04   
617-500 9 Cambridge MA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2008-09-26   
617-501 A Somerville MA NRTNMAAACM4  5562 METROPCS, INC. 128      
617-501 0 Somerville MA   5562 METROPCS, INC. 128      
617-501 1 Somerville MA   5562 METROPCS, INC. 128      
617-501 2 Somerville MA   5562 METROPCS, INC. 128      
617-501 3 Somerville MA   5562 METROPCS, INC. 128      
617-501 4 Somerville MA   5562 METROPCS, INC. 128      
617-501 5 Somerville MA   5562 METROPCS, INC. 128      
617-501 6 Somerville MA   5562 METROPCS, INC. 128      
617-501 7 Somerville MA   5562 METROPCS, INC. 128      
617-501 8 Somerville MA   5562 METROPCS, INC. 128      
617-501 9 Somerville MA   5562 METROPCS, INC. 128      
617-502 A Boston MA   829J PAETEC ITEL, LLC 128      
617-502 0 Boston MA   316E YMAX COMMUNICATIONS CORP. - MA 128   2007-08-09   
617-502 1 Boston MA   829J PAETEC ITEL, LLC 128   2007-04-12   
617-502 2 Boston MA   829J PAETEC ITEL, LLC 128      
617-502 3 Boston MA   829J PAETEC ITEL, LLC 128   2007-03-15   
617-502 4 Boston MA   829J PAETEC ITEL, LLC 128      
617-502 5 Boston MA   829J PAETEC ITEL, LLC 128      
617-502 6 Boston MA   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 128   2007-04-28   
617-502 7 Boston MA   829J PAETEC ITEL, LLC 128   2007-04-28   
617-502 8 Boston MA   829J PAETEC ITEL, LLC 128   2007-04-26   
617-502 9 Boston MA   829J PAETEC ITEL, LLC 128      
617-503 A Cambridge MA CMBRMAWADS2  9102 VERIZON NEW ENGLAND INC. 128      
617-503 0 Cambridge MA   145J TERRA NOVA TELECOM INC. 128   2022-05-05   
617-503 1 Cambridge MA   9102 VERIZON NEW ENGLAND INC. 128      
617-503 2 Cambridge MA   9102 VERIZON NEW ENGLAND INC. 128      
617-503 3 Cambridge MA   9102 VERIZON NEW ENGLAND INC. 128      
617-503 4 Cambridge MA   9102 VERIZON NEW ENGLAND INC. 128      
617-503 5 Cambridge MA   9102 VERIZON NEW ENGLAND INC. 128      
617-503 6 Cambridge MA   9102 VERIZON NEW ENGLAND INC. 128      
617-503 7 Cambridge MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2024-12-30   
617-503 8 Cambridge MA   9102 VERIZON NEW ENGLAND INC. 128      
617-503 9 Cambridge MA   9102 VERIZON NEW ENGLAND INC. 128      
617-504 A Boston MA NRTNMAAACM4  5562 METROPCS, INC. 128      
617-504 0 Boston MA   5562 METROPCS, INC. 128      
617-504 1 Boston MA   5562 METROPCS, INC. 128      
617-504 2 Boston MA   5562 METROPCS, INC. 128      
617-504 3 Boston MA   5562 METROPCS, INC. 128      
617-504 4 Boston MA   5562 METROPCS, INC. 128      
617-504 5 Boston MA   5562 METROPCS, INC. 128      
617-504 6 Boston MA   5562 METROPCS, INC. 128      
617-504 7 Boston MA   5562 METROPCS, INC. 128      
617-504 8 Boston MA   5562 METROPCS, INC. 128      
617-504 9 Boston MA   6889 OMNIPOINT MIAMI E LICENSE, LLC 128      

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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