Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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San Francisco: Central DA, CA

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
415-273 9 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-02-26   
415-274 A SNFCCA01DS0  9740 PACIFIC BELL 722      
415-274 0 SNFCCA01DS0  9740 PACIFIC BELL 722      
415-274 1 SNFCCA01DS0  9740 PACIFIC BELL 722      
415-274 2 SNFCCA01DS0  9740 PACIFIC BELL 722      
415-274 3 SNFCCA01DS0  9740 PACIFIC BELL 722      
415-274 4   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2025-03-10   
415-274 5 SNFCCA01DS0  9740 PACIFIC BELL 722      
415-274 6 SNFCCA01DS0  9740 PACIFIC BELL 722      
415-274 7 SNFCCA01DS0  9740 PACIFIC BELL 722      
415-274 8 SNFCCA01DS0  9740 PACIFIC BELL 722      
415-274 9 SNFCCA01DS0  9740 PACIFIC BELL 722      
415-276 A SNFCCAFJDS0  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
415-277 A SNFCCA01DS1  9740 PACIFIC BELL 722      
415-278 A SNFCCA21DS0  9740 PACIFIC BELL 722      
415-278 0 SNFCCA21DS0  9740 PACIFIC BELL 722      
415-278 1 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2010-09-16   
415-278 2 SNFCCA21DS0  9740 PACIFIC BELL 722      
415-278 3 OKLECAZV1MD  5562 METROPCS, INC. 722   2015-08-04   
415-278 4 SNFCCA21DS0  9740 PACIFIC BELL 722      
415-278 5 SNFCCA21DS0  9740 PACIFIC BELL 722      
415-278 6 SNFCCA21DS0  9740 PACIFIC BELL 722      
415-278 7 SNFCCA21DS0  9740 PACIFIC BELL 722      
415-278 8   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2025-03-10   
415-278 9 SNFCCA21DS0  9740 PACIFIC BELL 722      
415-279 A SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
415-280 A SNFCCA21XEZ  6630 SPOK, INC. 722      
415-281 A SNFCCA21DS1  9740 PACIFIC BELL 722      
415-282 A SNFCCA05DS0  9740 PACIFIC BELL 722      
415-283 A SNFCCA01DS1  9740 PACIFIC BELL 722      
415-283 0 SNFCCA01DS1  9740 PACIFIC BELL 722      
415-283 1 SNFCCA01DS1  9740 PACIFIC BELL 722      
415-283 2 SNFCCA01DS1  9740 PACIFIC BELL 722      
415-283 3 SNFCCA01DS1  9740 PACIFIC BELL 722      
415-283 4 SNFCCA01DS1  9740 PACIFIC BELL 722      
415-283 5 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2004-08-19   
415-283 6 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2004-08-19   
415-283 7 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2004-08-19   
415-283 8 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2004-08-02   
415-283 9 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2004-10-22   
415-284 A SNFCCA21DS1  9740 PACIFIC BELL 722      
415-285 A SNFCCA05DS0  9740 PACIFIC BELL 722      
415-288 A SNFCCA01DS1  9740 PACIFIC BELL 722      
415-290 A SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
415-291 A SNFCCA01DS0  9740 PACIFIC BELL 722      
415-291 0 SNFCCA01DS0  9740 PACIFIC BELL 722      
415-291 1 SNFCCA01DS0  9740 PACIFIC BELL 722      
415-291 2   829J PAETEC ITEL, LLC 722   2009-10-06   
415-291 3 SNFCCA01DS0  9740 PACIFIC BELL 722      
415-291 4 SNFCCA01DS0  9740 PACIFIC BELL 722      

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Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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