Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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OCN: 973E RACE TELECOMMUNICATIONS, INC. - CA

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
213-283 A Los Angeles: DA 01 CA LSANCARCD4S  730      
213-283 1 Los Angeles: DA 01 CA   730   2008-11-21   
279-228 A Sacramento: Main DA CA YBCYCATU0MD  726      
279-228 1 Sacramento: Main DA CA   726   2022-12-03   
415-400 A San Francisco: Central DA CA SNFCCAMM8MD  722      
415-400 1 San Francisco: Central DA CA   722   2009-03-16   
442-296 A Crowley Lake CA LSANCARCD4S  730      
442-296 0 Crowley Lake CA   730   2016-12-25   
442-298 A Trona CA LSANCARCD4S  730      
442-298 0 Trona CA   730   2016-12-25   
530-476 8 Arbuckle CA   726   2022-10-29   
530-619 1 Colusa CA   726   2022-10-24   
530-817 A Nevada City CA YBCYCATU0MD  726      
530-817 1 Nevada City CA   726   2022-10-29   
530-874 A Williams CA YBCYCATU0MD  726      
530-874 1 Williams CA   726   2022-12-03   
530-920 A Grass Valley: Main DA CA YBCYCATU0MD  726      
530-920 1 Grass Valley: Main DA CA   726   2022-12-03   
530-930 A Marysville CA YBCYCATU0MD  726      
530-930 1 Marysville CA   726   2022-11-14   
628-257 A Mill Valley CA SNFCCAMM8MD  722      
628-257 0 Mill Valley CA   722   2016-12-25   
661-380 A Bakersfield: Main DA CA MOJVCAAI0MD  734      
661-380 1 Bakersfield: Main DA CA   734   2009-06-19   
661-488 9 Lancaster CA   730   2016-11-20   
661-754 8 Mojave CA   734   2016-11-20   
661-821 9 Tehachapi CA   734   2016-11-20   
707-872 2 Occidental CA   722   2016-11-14   
760-249 9 Wrightwood: Wrightwood DA CA   730   2016-11-20   
760-706 8 Wrightwood: Phelan DA CA   730   2016-11-20   
760-762 2 Boron CA   730   2016-11-14   
760-965 1 Mammoth Lakes CA   730   2016-11-14   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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