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.

San Francisco: Central DA, CA

<< 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 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
415-978 0 SNFCCA21DS0  9740 PACIFIC BELL 722      
415-978 1 SNFCCA21DS0  9740 PACIFIC BELL 722      
415-978 2 SNFCCA21DS0  9740 PACIFIC BELL 722      
415-978 3 SNFCCA21DS0  9740 PACIFIC BELL 722      
415-978 4 SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
415-978 5 SNFCCA21DS0  9740 PACIFIC BELL 722      
415-978 6 SNFCCA21DS0  9740 PACIFIC BELL 722      
415-978 7 SNFCCA21DS0  9740 PACIFIC BELL 722      
415-978 8 SNFCCA21DS0  9740 PACIFIC BELL 722      
415-978 9 SNFCCA21DS0  9740 PACIFIC BELL 722      
415-979 A SNFCCA21DS0  9740 PACIFIC BELL 722      
415-981 A SNFCCA01DS2  9740 PACIFIC BELL 722      
415-982 A SNFCCA01DS2  9740 PACIFIC BELL 722      
415-982 0 SNFCCA01DS2  9740 PACIFIC BELL 722      
415-982 1 SNFCCA01DS2  9740 PACIFIC BELL 722      
415-982 2 SNFCCA01DS2  9740 PACIFIC BELL 722      
415-982 3 SNFCCA01DS2  9740 PACIFIC BELL 722      
415-982 4 SNFCCA01DS2  9740 PACIFIC BELL 722      
415-982 5 SNFCCA01DS2  9740 PACIFIC BELL 722      
415-982 6 SNFCCA01DS2  9740 PACIFIC BELL 722      
415-982 7 SNFCCA01DS2  9740 PACIFIC BELL 722      
415-982 8 SNFCCA01DS2  9740 PACIFIC BELL 722      
415-982 9 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2015-07-28   
415-983 A SNFCCA01DS2  9740 PACIFIC BELL 722      
415-983 0 SNFCCA01DS2  9740 PACIFIC BELL 722      
415-983 1 SNFCCA01DS2  9740 PACIFIC BELL 722      
415-983 2 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2006-12-21   
415-983 3 SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2008-09-04   
415-983 4 SNFCCA01DS2  9740 PACIFIC BELL 722      
415-983 5 SNFCCA01DS2  9740 PACIFIC BELL 722      
415-983 6 SNFCCA01DS2  9740 PACIFIC BELL 722      
415-983 7 SNFCCA01DS2  9740 PACIFIC BELL 722      
415-983 8 SNFCCA01DS2  9740 PACIFIC BELL 722      
415-983 9 SNFCCA01DS2  9740 PACIFIC BELL 722      
415-984 A SNFCCA01DS2  9740 PACIFIC BELL 722      
415-986 A SNFCCA01DS1  9740 PACIFIC BELL 722      
415-986 0 SNFCCA01DS1  9740 PACIFIC BELL 722      
415-986 1 SNFCCA01DS1  9740 PACIFIC BELL 722      
415-986 2 SNFCCA01DS1  9740 PACIFIC BELL 722      
415-986 3 SNFCCA01DS1  9740 PACIFIC BELL 722      
415-986 4 SNFCCA01DS1  9740 PACIFIC BELL 722      
415-986 5 SNFCCA01DS1  9740 PACIFIC BELL 722      
415-986 6 SNFCCA01DS1  9740 PACIFIC BELL 722      
415-986 7 SNFCCA01DS1  9740 PACIFIC BELL 722      
415-986 8 SNFCCA01DS1  9740 PACIFIC BELL 722      
415-986 9 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2015-07-28   
415-987 A SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
415-989 A SNFCCA01DS2  9740 PACIFIC BELL 722      
415-990 A SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
415-992 A OKLECAZVGT0  6529 T-MOBILE USA, INC. 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 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 >>

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.