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]

NXX: 850

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
617-850 A Boston MA BSTNMACODS0  7135 TC SYSTEMS, INC. 128      
617-850 0 Boston MA BSTNMACODS0  7135 TC SYSTEMS, INC. 128      
617-850 1 Boston MA BSTNMACODS0  7135 TC SYSTEMS, INC. 128      
617-850 2 Boston MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2005-08-01   
617-850 3 Boston MA BSTNMACODS0  7135 TC SYSTEMS, INC. 128      
617-850 4 Boston MA BSTNMACODS0  7135 TC SYSTEMS, INC. 128      
617-850 5 Boston MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2004-03-02   
617-850 6 Boston MA BSTNMACODS0  7135 TC SYSTEMS, INC. 128      
617-850 7 Boston MA BSTNMACODS0  7135 TC SYSTEMS, INC. 128      
617-850 8 Boston MA BSTNMACODS0  7135 TC SYSTEMS, INC. 128      
617-850 9 Boston MA BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128   2006-07-25   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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