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: 740

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
617-740 A Dorchester MA DRCHMAADRP0  9102 VERIZON NEW ENGLAND INC. 128      
617-740 0 Dorchester MA   9102 VERIZON NEW ENGLAND INC. 128      
617-740 1 Dorchester MA   9102 VERIZON NEW ENGLAND INC. 128      
617-740 2 Dorchester MA   9102 VERIZON NEW ENGLAND INC. 128      
617-740 3 Dorchester MA   9102 VERIZON NEW ENGLAND INC. 128      
617-740 4 Dorchester MA   9102 VERIZON NEW ENGLAND INC. 128      
617-740 5 Dorchester MA   9102 VERIZON NEW ENGLAND INC. 128      
617-740 6 Dorchester MA   9102 VERIZON NEW ENGLAND INC. 128      
617-740 7 Dorchester MA   9102 VERIZON NEW ENGLAND INC. 128      
617-740 8 Dorchester MA   9102 VERIZON NEW ENGLAND INC. 128      
617-740 9 Dorchester MA   145J TERRA NOVA TELECOM INC. 128   2022-12-15   

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

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