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: HRFRCTCR3MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
203-208 A Branford CT 318J COMCAST IP PHONE, LLC 920      
203-433 A Branford CT 318J COMCAST IP PHONE, LLC 920      
203-439 A Cheshire CT 318J COMCAST IP PHONE, LLC 920      
203-440 A Meriden CT 318J COMCAST IP PHONE, LLC 920      
203-535 A New Haven CT 318J COMCAST IP PHONE, LLC 920      
203-725 A Waterbury CT 318J COMCAST IP PHONE, LLC 920      
203-823 A New Haven CT 318J COMCAST IP PHONE, LLC 920      
475-338 A Branford CT 318J COMCAST IP PHONE, LLC 920      
475-344 A Bridgeport CT 318J COMCAST IP PHONE, LLC 920      
860-206 A Hartford CT 318J COMCAST IP PHONE, LLC 920      
860-216 A Hartford CT 318J COMCAST IP PHONE, LLC 920      
860-217 A Simsbury CT 318J COMCAST IP PHONE, LLC 920      
860-219 A Windsor CT 318J COMCAST IP PHONE, LLC 920      
860-310 A Hartford CT 318J COMCAST IP PHONE, LLC 920      
860-370 A Windsor Locks CT 318J COMCAST IP PHONE, LLC 920      
860-413 A Simsbury CT 318J COMCAST IP PHONE, LLC 920      
860-426 A Southington CT 318J COMCAST IP PHONE, LLC 920      
860-430 A Glastonbury CT 318J COMCAST IP PHONE, LLC 920      
860-432 A Manchester CT 318J COMCAST IP PHONE, LLC 920      
860-436 A Hartford CT 318J COMCAST IP PHONE, LLC 920      
860-453 A Canaan CT 318J COMCAST IP PHONE, LLC 920      
860-461 A Hartford CT 318J COMCAST IP PHONE, LLC 920      
860-479 A Plainville CT 318J COMCAST IP PHONE, LLC 920      
860-495 A Pawcatuck CT 318J COMCAST IP PHONE, LLC 920      
860-519 A Hartford CT 318J COMCAST IP PHONE, LLC 920      
860-530 A Columbia CT 318J COMCAST IP PHONE, LLC 920      
860-603 A Colchester CT 318J COMCAST IP PHONE, LLC 920      
860-698 A Enfield CT 318J COMCAST IP PHONE, LLC 920      
860-764 A Canton CT 318J COMCAST IP PHONE, LLC 920      
860-792 A Putnam CT 318J COMCAST IP PHONE, LLC 920      
860-851 A Stafford Springs CT 318J COMCAST IP PHONE, LLC 920      
860-926 A Rockville CT 318J COMCAST IP PHONE, LLC 920      
860-937 A Hartford CT 318J COMCAST IP PHONE, LLC 920      
860-981 A Watertown CT 318J COMCAST IP PHONE, LLC 920      
959-213 A New London CT 318J COMCAST IP PHONE, LLC 920      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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