Local Calling Guide

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Search area code/prefix (NPA/NXX)
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NPA: 203 [Rate centres in NPA 203] [Dial plan for NPA 203]

NXX: 774

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
203-774 A Wallingford CT   829J PAETEC ITEL, LLC 920      
203-774 0 Wallingford CT   829J PAETEC ITEL, LLC 920      
203-774 1 Wallingford CT   829J PAETEC ITEL, LLC 920      
203-774 2 Wallingford CT   829J PAETEC ITEL, LLC 920      
203-774 3 Wallingford CT   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-02-04   
203-774 4 Wallingford CT   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2003-08-12   
203-774 5 Wallingford CT   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2011-08-27   
203-774 6 Wallingford CT   508J CENTURYLINK COMMUNICATIONS, LLC 920   2014-07-16   
203-774 7 Wallingford CT   829J PAETEC ITEL, LLC 920      
203-774 8 Wallingford CT   829J PAETEC ITEL, LLC 920      
203-774 9 Wallingford CT   639C ONVOY, LLC - CT 920   2016-05-04   

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

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