Prefix Information

The prefix 561 is part of area code 650 serving San Mateo, California.

This exchange contains 10,000 possible phone numbers (650-561-0000 through 650-561-9999).

Browse Numbers in This Prefix

650-561-0000-0999 650-561-1000-1999 650-561-2000-2999 650-561-3000-3999 650-561-4000-4999 650-561-5000-5999 650-561-6000-6999 650-561-7000-7999 650-561-8000-8999 650-561-9000-9999

Sample Numbers

(650) 561-0000 (650) 561-1234 (650) 561-2000 (650) 561-3333 (650) 561-4444 (650) 561-5555 (650) 561-6000 (650) 561-7777 (650) 561-8888 (650) 561-9999