Prefix Information

The prefix 203 is part of area code 650 serving San Mateo, California.

This exchange contains 10,000 possible phone numbers (650-203-0000 through 650-203-9999).

Browse Numbers in This Prefix

650-203-0000-0999 650-203-1000-1999 650-203-2000-2999 650-203-3000-3999 650-203-4000-4999 650-203-5000-5999 650-203-6000-6999 650-203-7000-7999 650-203-8000-8999 650-203-9000-9999

Sample Numbers

(650) 203-0000 (650) 203-1234 (650) 203-2000 (650) 203-3333 (650) 203-4444 (650) 203-5555 (650) 203-6000 (650) 203-7777 (650) 203-8888 (650) 203-9999