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: 257

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
508-257 A Siasconset MA SCNSMABHRS1  9102 VERIZON NEW ENGLAND INC. 128      
508-257 0 Siasconset MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2005-05-06   
508-257 1 Siasconset MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2008-12-06   
508-257 2 Siasconset MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2022-08-28   
508-257 3 Siasconset MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2004-09-05   
508-257 4 Siasconset MA SCNSMABHRS1  9102 VERIZON NEW ENGLAND INC. 128      
508-257 5 Siasconset MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-07-15   
508-257 6 Siasconset MA SCNSMABHRS1  9102 VERIZON NEW ENGLAND INC. 128      
508-257 7 Siasconset MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2016-04-06   
508-257 8 Siasconset MA SCNSMABHRS1  9102 VERIZON NEW ENGLAND INC. 128      
508-257 9 Siasconset MA SCNSMABHRS1  9102 VERIZON NEW ENGLAND INC. 128      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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