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: WLMNCT00DS0

Remotes:

Switch Switch name Switch type
CLMACT00RS4  Columbia, CT (Remote)  RSC 
CNTYCT00RS1  Coventry, CT (Remote)  RSC 
HMPNCT00RS2  Hampton, CT (Remote)  RSC 
LBNNCT00RS2  Lebanon, CT (Remote)  RSC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
860-423 A Willimantic CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
860-450 A Willimantic CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
860-456 A Willimantic CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
860-465 A Willimantic CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      

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

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