Prefix Information

The prefix 312 is part of area code 650 serving San Mateo, California.

This exchange contains 10,000 possible phone numbers (650-312-0000 through 650-312-9999).

Browse Numbers in This Prefix

650-312-0000-0999 650-312-1000-1999 650-312-2000-2999 650-312-3000-3999 650-312-4000-4999 650-312-5000-5999 650-312-6000-6999 650-312-7000-7999 650-312-8000-8999 650-312-9000-9999

Sample Numbers

(650) 312-0000 (650) 312-1234 (650) 312-2000 (650) 312-3333 (650) 312-4444 (650) 312-5555 (650) 312-6000 (650) 312-7777 (650) 312-8888 (650) 312-9999