Local Calling Guide

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

NXX: 855

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
617-855 A Belmont MA BLMTMALERP0  9102 VERIZON NEW ENGLAND INC. 128      
617-855 0 Belmont MA   892D ONVOY, LLC - MA 128   2016-02-25   
617-855 1 Belmont MA   892D ONVOY, LLC - MA 128   2016-02-25   
617-855 2 Belmont MA   9102 VERIZON NEW ENGLAND INC. 128      
617-855 3 Belmont MA   9102 VERIZON NEW ENGLAND INC. 128      
617-855 4 Belmont MA   9102 VERIZON NEW ENGLAND INC. 128      
617-855 5 Belmont MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2010-02-19   
617-855 6 Belmont MA   892D ONVOY, LLC - MA 128   2010-04-07   
617-855 7 Belmont MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2010-10-21   
617-855 8 Belmont MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2011-03-19   
617-855 9 Belmont MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2011-06-27   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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