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: 503

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
617-503 A Cambridge MA CMBRMAWADS2  9102 VERIZON NEW ENGLAND INC. 128      
617-503 0 Cambridge MA   145J TERRA NOVA TELECOM INC. 128      
617-503 1 Cambridge MA CMBRMAWADS2  9102 VERIZON NEW ENGLAND INC. 128      
617-503 2 Cambridge MA CMBRMAWADS2  9102 VERIZON NEW ENGLAND INC. 128      
617-503 3 Cambridge MA CMBRMAWADS2  9102 VERIZON NEW ENGLAND INC. 128      
617-503 4 Cambridge MA CMBRMAWADS2  9102 VERIZON NEW ENGLAND INC. 128      
617-503 5 Cambridge MA CMBRMAWADS2  9102 VERIZON NEW ENGLAND INC. 128      
617-503 6 Cambridge MA CMBRMAWADS2  9102 VERIZON NEW ENGLAND INC. 128      
617-503 8 Cambridge MA CMBRMAWADS2  9102 VERIZON NEW ENGLAND INC. 128      
617-503 9 Cambridge MA CMBRMAWADS2  9102 VERIZON NEW ENGLAND INC. 128      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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