Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 508 [Rate centres in NPA 508] [Dial plan for NPA 508]

NXX: 357

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
508-357 A Marlboro MA MRBOMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
508-357 1 Marlboro MA MRBOMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
508-357 2 Marlboro MA MRBOMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
508-357 3 Marlboro MA MRBOMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
508-357 4 Marlboro MA MRBOMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
508-357 5 Marlboro MA MRBOMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
508-357 6 Marlboro MA MRBOMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
508-357 7 Marlboro MA MRBOMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
508-357 8 Marlboro MA MRBOMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      
508-357 9 Marlboro MA MRBOMAMADS0  9102 VERIZON NEW ENGLAND INC. 128      

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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