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: 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
916-915 6 Rio Linda CA SCRMCA0121Z  726   2003-09-29   
916-970 2 Sacramento: Main DA CA SCRMCA0121Z  726   2015-04-12   
916-974 4 Sacramento: North DA CA SCRMCA0121Z  726   2012-01-13   
916-999 8 Sacramento: North DA CA SCRMCA0121Z  726   2011-03-13   
925-201 A Pleasanton CA SNJSCAYB0MD  722      
925-201 0 Pleasanton CA SNJSCAYB0MD  722      
925-201 2 Pleasanton CA SNJSCAYB0MD  722      
925-201 4 Pleasanton CA SNJSCAYB0MD  722      
925-201 7 Pleasanton CA SNJSCAYB0MD  722      
925-201 8 Pleasanton CA SNJSCAYB0MD  722   2007-12-28   
925-282 2 Lafayette CA SNJSCAYB0MD  722   2003-09-30   
925-302 7 Bishop Ranch CA SNJSCAYB0MD  722   2007-03-26   
925-320 A Moraga CA SNJSCAYB0MD  722      
925-320 9 Moraga CA SNJSCAYB0MD  722      
925-331 A Antioch CA SNJSCAYB0MD  722      
925-331 1 Antioch CA SNJSCAYB0MD  722      
925-331 2 Antioch CA SNJSCAYB0MD  722      
925-331 3 Antioch CA SNJSCAYB0MD  722      
925-331 9 Antioch CA SNJSCAYB0MD  722      
925-344 A Livermore CA SNJSCAYB0MD  722      
925-344 0 Livermore CA SNJSCAYB0MD  722      
925-410 A Pleasanton CA SNJSCAYB0MD  722      
925-410 0 Pleasanton CA SNJSCAYB0MD  722   2020-09-04   
925-410 1 Pleasanton CA SNJSCAYB0MD  722   2020-09-04   
925-410 2 Pleasanton CA SNJSCAYB0MD  722   2020-09-04   
925-410 3 Pleasanton CA SNJSCAYB0MD  722   2020-09-04   
925-410 4 Pleasanton CA SNJSCAYB0MD  722   2020-09-04   
925-410 5 Pleasanton CA SNJSCAYB0MD  722   2020-09-04   
925-410 6 Pleasanton CA SNJSCAYB0MD  722   2020-09-04   
925-410 7 Pleasanton CA SNJSCAYB0MD  722   2020-09-04   
925-410 8 Pleasanton CA SNJSCAYB0MD  722   2020-09-04   
925-410 9 Pleasanton CA SNJSCAYB0MD  722   2020-09-04   
925-438 A Orinda CA SNJSCAYB0MD  722      
925-438 1 Orinda CA SNJSCAYB0MD  722      
925-438 9 Orinda CA SNJSCAYB0MD  722      
925-441 A Antioch CA SNJSCAYB0MD  722      
925-441 5 Antioch CA SNJSCAYB0MD  722   2022-08-15   
925-441 8 Antioch CA SNJSCAYB0MD  722   2022-08-15   
925-444 A Lafayette CA SNJSCAYB0MD  722      
925-444 1 Lafayette CA SNJSCAYB0MD  722      
925-444 2 Lafayette CA SNJSCAYB0MD  722      
925-444 4 Lafayette CA SNJSCAYB0MD  722      
925-444 9 Lafayette CA SNJSCAYB0MD  722      
925-452 A Dublin-San Ramon CA SNJSCAYB0MD  722      
925-452 0 Dublin-San Ramon CA SNJSCAYB0MD  722      
925-452 1 Dublin-San Ramon CA SNJSCAYB0MD  722      
925-452 2 Dublin-San Ramon CA SNJSCAYB0MD  722      
925-452 8 Dublin-San Ramon CA SNJSCAYB0MD  722      
925-452 9 Dublin-San Ramon CA SNJSCAYB0MD  722      
925-453 8 Livermore CA SNJSCAYB0MD  722   2013-09-14   
925-474 A Pleasanton CA SNJSCAYB0MD  722      
925-474 1 Pleasanton CA SNJSCAYB0MD  722      
925-474 2 Pleasanton CA SNJSCAYB0MD  722      
925-474 3 Pleasanton CA SNJSCAYB0MD  722      
925-474 8 Pleasanton CA SNJSCAYB0MD  722      
925-474 9 Pleasanton CA SNJSCAYB0MD  722      
925-480 A Bishop Ranch CA SNJSCAYB0MD  722      
925-480 3 Bishop Ranch CA SNJSCAYB0MD  722      
925-480 4 Bishop Ranch CA SNJSCAYB0MD  722      
925-482 A Walnut Creek CA SNJSCAYB0MD  722      
925-482 1 Walnut Creek CA SNJSCAYB0MD  722      
925-482 2 Walnut Creek CA SNJSCAYB0MD  722      
925-482 3 Walnut Creek CA SNJSCAYB0MD  722      
925-482 8 Walnut Creek CA SNJSCAYB0MD  722      
925-482 9 Walnut Creek CA SNJSCAYB0MD  722      
925-495 6 Livermore CA SNJSCAYB0MD  722   2017-04-17   
925-498 A Bishop Ranch CA SNJSCAYB0MD  722      
925-498 1 Bishop Ranch CA SNJSCAYB0MD  722      
925-498 2 Bishop Ranch CA SNJSCAYB0MD  722      
925-498 6 Bishop Ranch CA SNJSCAYB0MD  722   2006-12-15   
925-498 7 Bishop Ranch CA SNJSCAYB0MD  722   2006-12-15   
925-498 9 Bishop Ranch CA SNJSCAYB0MD  722      
925-526 A Pittsburg CA SNJSCAYB0MD  722      
925-526 3 Pittsburg CA SNJSCAYB0MD  722      
925-526 8 Pittsburg CA SNJSCAYB0MD  722      
925-526 9 Pittsburg CA SNJSCAYB0MD  722      
925-574 A Dublin-San Ramon CA SNJSCAYB0MD  722      
925-574 2 Dublin-San Ramon CA SNJSCAYB0MD  722      
925-574 4 Dublin-San Ramon CA SNJSCAYB0MD  722      
925-574 7 Dublin-San Ramon CA SNJSCAYB0MD  722      
925-583 A Livermore CA SNJSCAYB0MD  722      
925-583 0 Livermore CA SNJSCAYB0MD  722      
925-583 1 Livermore CA SNJSCAYB0MD  722      
925-583 2 Livermore CA SNJSCAYB0MD  722      
925-583 3 Livermore CA SNJSCAYB0MD  722      
925-583 8 Livermore CA SNJSCAYB0MD  722      
925-583 9 Livermore CA SNJSCAYB0MD  722      
925-587 A Dublin-San Ramon CA SNJSCAYB0MD  722      
925-588 A Walnut Creek CA SNJSCAYB0MD  722      
925-588 2 Walnut Creek CA SNJSCAYB0MD  722      
925-592 A Moraga CA SNJSCAYB0MD  722      
925-605 3 Livermore CA SNJSCAYB0MD  722      
925-621 A Pleasanton CA SNJSCAYB0MD  722      
925-621 1 Pleasanton CA SNJSCAYB0MD  722      
925-621 2 Pleasanton CA SNJSCAYB0MD  722      
925-621 3 Pleasanton CA SNJSCAYB0MD  722      
925-621 4 Pleasanton CA SNJSCAYB0MD  722      
925-621 5 Pleasanton CA SNJSCAYB0MD  722      
925-621 6 Pleasanton CA SNJSCAYB0MD  722      
925-621 7 Pleasanton CA SNJSCAYB0MD  722      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 >>

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.