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
415-821 1 SNFCCA05DS0  9740 PACIFIC BELL 722      
415-821 2 SNFCCA05DS0  9740 PACIFIC BELL 722      
415-821 3 SNFCCA05DS0  9740 PACIFIC BELL 722      
415-821 4 SNFCCA05DS0  9740 PACIFIC BELL 722      
415-821 5 SNFCCA05DS0  9740 PACIFIC BELL 722      
415-821 6 SNFCCA05DS0  9740 PACIFIC BELL 722      
415-821 7 SNFCCA05DS0  9740 PACIFIC BELL 722      
415-821 8 SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2010-03-08   
415-821 9 SNFCCA05DS0  9740 PACIFIC BELL 722      
415-822 A SNFCCA17DS0  9740 PACIFIC BELL 722      
415-823 A SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
415-824 A SNFCCA05DS0  9740 PACIFIC BELL 722      
415-826 A SNFCCA05DS0  9740 PACIFIC BELL 722      
415-828 A HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
415-829 A SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
415-829 0 SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
415-829 1 SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
415-829 2 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2006-10-11   
415-829 3 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2006-10-11   
415-829 4 SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
415-829 5 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2006-10-21   
415-829 6 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2006-10-21   
415-829 7 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2006-10-11   
415-829 8 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2006-10-11   
415-829 9 SNFCCAMMDS7  258E YMAX COMMUNICATIONS CORP. - CA 722   2009-08-11   
415-830 A HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
415-830 0 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
415-830 1 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
415-830 2 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
415-830 3 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2006-12-15   
415-830 4 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2006-12-15   
415-830 5 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2006-12-15   
415-830 6 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2006-12-15   
415-830 7 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
415-830 8 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2006-12-15   
415-830 9 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2006-12-15   
415-832 A SNFCCA04DS1  9740 PACIFIC BELL 722      
415-832 0 OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2007-05-31   
415-832 1 SNFCCA04DS1  9740 PACIFIC BELL 722      
415-832 2 SNFCCA04DS1  9740 PACIFIC BELL 722      
415-832 3 SNFCCA04DS1  9740 PACIFIC BELL 722      
415-832 4 SNFCCA04DS1  9740 PACIFIC BELL 722      
415-832 5 SNFCCA04DS1  9740 PACIFIC BELL 722      
415-832 6 SNFCCA04DS1  9740 PACIFIC BELL 722      
415-832 7 SNFCCA04DS1  9740 PACIFIC BELL 722      
415-832 8 SNFCCA04DS1  9740 PACIFIC BELL 722      
415-832 9 OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2007-05-31   
415-833 A SNFCCA12DS1  9740 PACIFIC BELL 722      
415-834 A SNFCCA01DS0  9740 PACIFIC BELL 722      
415-834 0 SNFCCA01DS0  9740 PACIFIC BELL 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: ISP Telecom

Like this site? We accept donations via PayPal.