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: SMFRCT0162Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
203-244 2 Ridgefield CT 3863 CTC COMMUNICATIONS CORP. - CT 920      
203-304 4 Newtown CT 3863 CTC COMMUNICATIONS CORP. - CT 920      
203-307 4 Fairfield CT 3863 CTC COMMUNICATIONS CORP. - CT 920      
203-312 1 Danbury CT 3863 CTC COMMUNICATIONS CORP. - CT 920      
203-416 1 Bridgeport CT 3863 CTC COMMUNICATIONS CORP. - CT 920      
203-504 A Stamford CT 3863 CTC COMMUNICATIONS CORP. - CT 920      
203-504 1 Stamford CT 3863 CTC COMMUNICATIONS CORP. - CT 920      
203-517 3 Stamford CT 3863 CTC COMMUNICATIONS CORP. - CT 920      
203-595 2 Stamford CT 3863 CTC COMMUNICATIONS CORP. - CT 920      
203-617 4 Danbury CT 3863 CTC COMMUNICATIONS CORP. - CT 920      
203-635 1 Westport CT 3863 CTC COMMUNICATIONS CORP. - CT 920      
203-644 1 Norwalk CT 3863 CTC COMMUNICATIONS CORP. - CT 920      
203-665 4 Wilton CT 3863 CTC COMMUNICATIONS CORP. - CT 920      
203-669 5 Darien CT 3863 CTC COMMUNICATIONS CORP. - CT 920      
203-690 5 Bridgeport CT 3863 CTC COMMUNICATIONS CORP. - CT 920      
203-698 6 Old Greenwich CT 3863 CTC COMMUNICATIONS CORP. - CT 920      
203-713 1 Milford CT 3863 CTC COMMUNICATIONS CORP. - CT 920      
203-713 7 Milford CT 3863 CTC COMMUNICATIONS CORP. - CT 920      
203-814 3 Bridgeport CT 3863 CTC COMMUNICATIONS CORP. - CT 920      
203-842 6 Norwalk CT 3863 CTC COMMUNICATIONS CORP. - CT 920      
203-880 6 Trumbull CT 3863 CTC COMMUNICATIONS CORP. - CT 920      
203-965 4 Stamford CT 3863 CTC COMMUNICATIONS CORP. - CT 920      
475-319 2 Bridgeport CT 3863 CTC COMMUNICATIONS CORP. - CT 920      
475-329 3 Danbury CT 3863 CTC COMMUNICATIONS CORP. - CT 920      
475-999 6 Fairfield CT 3863 CTC COMMUNICATIONS CORP. - CT 920      
860-821 2 Putnam CT 3863 CTC COMMUNICATIONS CORP. - CT 920      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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