Prefix Information

The prefix 550 is part of area code 650 serving San Mateo, California.

This exchange contains 10,000 possible phone numbers (650-550-0000 through 650-550-9999).

Browse Numbers in This Prefix

650-550-0000-0999 650-550-1000-1999 650-550-2000-2999 650-550-3000-3999 650-550-4000-4999 650-550-5000-5999 650-550-6000-6999 650-550-7000-7999 650-550-8000-8999 650-550-9000-9999

Sample Numbers

(650) 550-0000 (650) 550-1234 (650) 550-2000 (650) 550-3333 (650) 550-4444 (650) 550-5555 (650) 550-6000 (650) 550-7777 (650) 550-8888 (650) 550-9999