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: 668

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
617-668 A Watertown MA CMBRMAMQDS0  4536 XO MASSACHUSETTS, INC. 128      
617-668 0 Watertown MA SOVLMAABBMD  145J TERRA NOVA TELECOM INC. 128   2021-01-18   
617-668 1 Watertown MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2020-06-21   
617-668 2 Watertown MA BRTNMACOVMD  7135 TC SYSTEMS, INC. 128   2020-02-13   
617-668 3 Watertown MA FRMNMAWARMD  7421 AT&T LOCAL 128   2010-06-03   
617-668 4 Watertown MA FRMNMAWARMD  7421 AT&T LOCAL 128   2015-09-14   
617-668 5 Watertown MA CMBRMA01DS5  7135 TC SYSTEMS, INC. 128   2016-02-15   
617-668 6 Watertown MA CMBRMAMQDS0  4536 XO MASSACHUSETTS, INC. 128      
617-668 7 Watertown MA BRTNMACOVMD  7135 TC SYSTEMS, INC. 128   2019-11-21   
617-668 8 Watertown MA BRTNMACOVMD  7135 TC SYSTEMS, INC. 128   2019-11-21   
617-668 9 Watertown MA CMBRMAMQDS0  4536 XO MASSACHUSETTS, INC. 128      

Last updated: Tue, 04 May 2021 15:04:27 UTC

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