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.

OCN: 2321 HAPPY VALLEY TEL. CO.

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
530-266 A Trinity Center CA TRCTCAXFPS0  724      
530-266 0 Trinity Center CA   724      
530-266 3 Trinity Center CA   724      
530-286 A Minersville CA TRCTCAXFPS0  724      
530-286 0 Minersville CA   724      
530-286 2 Minersville CA   724      
530-352 A Platina CA PLTICAXFRP0  724      
530-352 0 Platina CA   724      
530-352 4 Platina CA   724      
530-357 A Olinda CA OLNDCAXEPS0  724      
530-396 A Olinda CA OLNDCAXEPS0  724      

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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