Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: BRPTCT23AMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
203-201 A New Haven CT 6630 SPOK, INC. 920      
203-279 A Bridgeport CT 6630 SPOK, INC. 920      
203-282 A Stamford CT 6630 SPOK, INC. 920      
203-289 A Danbury CT 6630 SPOK, INC. 920      
203-342 A Bridgeport CT 6630 SPOK, INC. 920      
203-398 A Norwalk CT 6630 SPOK, INC. 920      
203-477 A New Haven CT 6630 SPOK, INC. 920      
203-593 A Norwalk CT 6630 SPOK, INC. 920      
203-835 A Norwalk CT 6630 SPOK, INC. 920      
203-839 A Norwalk CT 6630 SPOK, INC. 920      

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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