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: 805 [Rate centres in NPA 805] [Dial plan for NPA 805]

NXX: 438

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
805-438 A Santa Margarita CA SNMICA11RS0  9740 PACIFIC BELL 740      
805-438 0 Santa Margarita CA SNLOCA01XCY  145J TERRA NOVA TELECOM INC. 740   2021-01-06   
805-438 1 Santa Margarita CA SNMICA11RS0  9740 PACIFIC BELL 740      
805-438 2 Santa Margarita CA SNBBCAXFXWX  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 740   2005-08-01   
805-438 3 Santa Margarita CA SNMICA11RS0  9740 PACIFIC BELL 740      
805-438 4 Santa Margarita CA SNMICA11RS0  9740 PACIFIC BELL 740      
805-438 5 Santa Margarita CA SNMICA11RS0  9740 PACIFIC BELL 740      
805-438 6 Santa Margarita CA SNLOCAQZDS0  9807 NORCAST COMMUNICATIONS CORPORATION - CA 740   2013-01-20   
805-438 7 Santa Margarita CA SNLOCAJTFMD  516C AT&T CORP. 740   2013-02-17   
805-438 8 Santa Margarita CA SNLOCA014MD  9262 UTILITY TELECOM GROUP, LLC - CA 740   2005-08-10   
805-438 9 Santa Margarita CA   7139 TELEPORT COMMUNICATIONS GROUP - LOS ANGELES 740   2021-04-21   

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.