Local Calling Guide

Area code/prefix search

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

NXX: 728

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
203-728 A Stamford CT SMFRCT01DS2  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-728 0 Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2006-12-22   
203-728 1 Stamford CT SMFRCTDSDS0  7230 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 920   2006-12-22   
203-728 2 Stamford CT SMFRCT01DS2  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2006-12-22   
203-728 3 Stamford CT SMFRCT01DS2  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2006-12-22   
203-728 4 Stamford CT SMFRCT01DS2  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2006-12-22   
203-728 5 Stamford CT SMFRCT01DS2  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2006-12-22   
203-728 6 Stamford CT SMFRCT01DS2  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2006-12-22   
203-728 7 Stamford CT SMFRCT01DS2  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2006-12-22   
203-728 8 Stamford CT SMFRCT01DS2  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2006-12-22   
203-728 9 Stamford CT SMFRCT01DS2  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2006-12-22   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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