Country: USA, location: California

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650-262-0270, Pescadero
SAN MATEO LEVEL 3 COMMUNICATIONS, LLC -
3
650-443-5248, Millbrae
SAN MATEO U.S. TELEPACIFIC CORP. - CA
4 0
2 0
650-253-2000, Mountain View
SANTA CLARA MCI WORLDCOM COMMUNICATIONS, I
0 3
650-209-7463, Los Altos
SANTA CLARA U.S. TELEPACIFIC CORP. - CA
0 1
1 0
650-246-9114, San Bruno
SAN MATEO PACIFIC BELL
5 0
650-200-6327, San Mateo
SAN MATEO O1 COMMUNICATIONS, INC. - CA
1 0
650-271-4283, San Bruno
SAN MATEO METRO PCS, INC.
1 0
650-262-4445, Pescadero
SAN MATEO LEVEL 3 COMMUNICATIONS, LLC -
0 1
650-429-2920, Mountain View
SANTA CLARA MCI WORLDCOM COMMUNICATIONS, I
1 0
650-443-5234, Millbrae
SAN MATEO U.S. TELEPACIFIC CORP. - CA
1 0
650-487-4796, La Honda
SAN MATEO U.S. TELEPACIFIC CORP. - CA
1 0
650-276-1342, Half Moon Bay
SAN MATEO LEVEL 3 TELECOM OF CALIFORNIA,
1
650-429-2914, Mountain View
SANTA CLARA MCI WORLDCOM COMMUNICATIONS, I
1 0
650-200-5326, San Mateo
SAN MATEO O1 COMMUNICATIONS, INC. - CA
1 0
650-942-6018, Millbrae
SAN MATEO CELLCO PARTNERSHIP DBA VERIZON
1
650-864-8790, Mountain View
SANTA CLARA PACIFIC BELL
1 0
5
650-200-2303, San Mateo
SAN MATEO O1 COMMUNICATIONS, INC. - CA
1 0
1
1
650-662-1378, La Honda
SAN MATEO O1 COMMUNICATIONS, INC. - CA
1
1
650-690-8635, Palo Alto
SANTA CLARA AT&T LOCAL
3
650-935-7326, Los Altos
SANTA CLARA MCIMETRO ACCESS TRANSMISSION S
1
4
650-763-0026, San Bruno
SAN MATEO LEVEL 3 COMMUNICATIONS, LLC -
1
650-281-2372, San Mateo
SAN MATEO SPRINT SPECTRUM L.P.
1
650-830-9673, San Carlos
SAN MATEO LEVEL 3 COMMUNICATIONS, LLC -
1
Additional California area codes:

209 213 310 323 408 415 424 442 510 530 559 562 619 626 628 657 661 707 714 747 760 805 818 831 858 909 916 925 949 951

North America Area Codes

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