Local Calling Guide

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NPA: 309 [Rate centres in NPA 309] [Dial plan for NPA 309]

NXX: 475

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-475 A Saybrook IL SYBKILXDRS0  1015 FRONTIER NORTH, INC. - IL 366      
309-475 1 Saybrook IL BLTNILXDX1Y  073H TELNYX LLC 366      
309-475 2 Saybrook IL SYBKILXDRS0  1015 FRONTIER NORTH, INC. - IL 366      
309-475 3 Saybrook IL BLTNILTS7MD  145J TERRA NOVA TELECOM INC. 366      
309-475 4 Saybrook IL   145J TERRA NOVA TELECOM INC. 366      
309-475 6 Saybrook IL SYBKILXDRS0  1015 FRONTIER NORTH, INC. - IL 366      
309-475 7 Saybrook IL BLTNILTSYMD  495J STRATUS NETWORKS 366      
309-475 8 Saybrook IL   145J TERRA NOVA TELECOM INC. 366      
309-475 9 Saybrook IL SYBKILXDRS0  1015 FRONTIER NORTH, INC. - IL 366      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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