Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 607 [Rate centres in NPA 607] [Dial plan for NPA 607]

NXX: 310

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
607-310 A Cortland NY SYRCNYSWX0X  4006 LEVEL 3 COMMUNICATIONS, LLC - NY 136      
607-310 0 Cortland NY   384C ONVOY, LLC- NY 136   2012-10-22   
607-310 1 Cortland NY   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 136   2018-01-16   
607-310 6 Cortland NY   4006 LEVEL 3 COMMUNICATIONS, LLC - NY 136      
607-310 8 Cortland NY   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 136   2006-12-15   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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