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: 840 [Rate centres in NPA 840] [Dial plan for NPA 840]

NXX: 250

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
840-250 A Arrowhead CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-03-03   
840-250 0 Arrowhead CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-06-09   
840-250 1 Arrowhead CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-06-09   
840-250 2 Arrowhead CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-06-09   
840-250 3 Arrowhead CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-06-09   
840-250 4 Arrowhead CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-04-05   
840-250 5 Arrowhead CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-04-05   
840-250 6 Arrowhead CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-04-05   
840-250 7 Arrowhead CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-03-03   
840-250 8 Arrowhead CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-03-03   
840-250 9 Arrowhead CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2024-03-03   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.