Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 475 [Rate centres in NPA 475] [Dial plan for NPA 475]

NXX: 549

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-549 A Milford CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920      
475-549 0 Milford CT   199F BANDWIDTH.COM CLEC, LLC - CT 920   2015-06-21   
475-549 1 Milford CT   199F BANDWIDTH.COM CLEC, LLC - CT 920   2015-06-21   
475-549 2 Milford CT   073H TELNYX LLC 920   2017-06-05   
475-549 3 Milford CT   639C ONVOY, LLC - CT 920   2019-06-14   
475-549 4 Milford CT   539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2018-10-21   
475-549 5 Milford CT   639C ONVOY, LLC - CT 920   2018-07-14   
475-549 6 Milford CT   639C ONVOY, LLC - CT 920   2019-03-29   
475-549 7 Milford CT   639C ONVOY, LLC - CT 920   2019-03-29   
475-549 8 Milford CT   612K CSC VOICE, LLC 920   2015-06-22   
475-549 9 Milford CT   639C ONVOY, LLC - CT 920   2015-06-29   

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

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