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.

NPA: 360 [Rate centres in NPA 360] [Dial plan for NPA 360]

NXX: 643

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
360-643 A Port Townsend WA PTTWWA010MD  6529 T-MOBILE USA, INC. 674      
360-643 0 Port Townsend WA   6529 T-MOBILE USA, INC. 674      
360-643 1 Port Townsend WA   6529 T-MOBILE USA, INC. 674      
360-643 2 Port Townsend WA   6529 T-MOBILE USA, INC. 674   2022-10-19   
360-643 3 Port Townsend WA   6529 T-MOBILE USA, INC. 674      
360-643 4 Port Townsend WA   6529 T-MOBILE USA, INC. 674   2021-10-18   
360-643 5 Port Townsend WA   6529 T-MOBILE USA, INC. 674   2021-10-18   
360-643 6 Port Townsend WA   6529 T-MOBILE USA, INC. 674   2021-05-27   
360-643 7 Port Townsend WA   6529 T-MOBILE USA, INC. 674   2021-05-27   
360-643 8 Port Townsend WA   6529 T-MOBILE USA, INC. 674   2021-02-27   
360-643 9 Port Townsend WA   6529 T-MOBILE USA, INC. 674   2007-07-06   

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.