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: 306

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
203-306 A Milford CT   829J PAETEC ITEL, LLC 920      
203-306 0 Milford CT   829J PAETEC ITEL, LLC 920      
203-306 1 Milford CT   829J PAETEC ITEL, LLC 920      
203-306 2 Milford CT   829J PAETEC ITEL, LLC 920      
203-306 3 Milford CT   829J PAETEC ITEL, LLC 920      
203-306 4 Milford CT   829J PAETEC ITEL, LLC 920      
203-306 5 Milford CT HRFRCTASDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 920   2004-08-27   
203-306 6 Milford CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2008-10-16   
203-306 7 Milford CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2004-02-09   
203-306 8 Milford CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2002-12-30   
203-306 9 Milford CT BLFDCTAP2MD  5562 METROPCS, INC. 920   2005-12-29   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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