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: 297

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
617-297 A Dorchester MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
617-297 0 Dorchester MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
617-297 1 Dorchester MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2020-04-25   
617-297 2 Dorchester MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-01-06   
617-297 3 Dorchester MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
617-297 4 Dorchester MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2020-04-25   
617-297 5 Dorchester MA NWTNMAWAVMD  318J COMCAST IP PHONE, LLC 128   2005-01-20   
617-297 6 Dorchester MA CMBSMA01AMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2014-12-15   
617-297 7 Dorchester MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2010-02-19   
617-297 8 Dorchester MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2010-02-19   
617-297 9 Dorchester MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2012-04-27   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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