Prefix Information

The prefix 623 is part of area code 510 serving Oakland, California.

This exchange contains 10,000 possible phone numbers (510-623-0000 through 510-623-9999).

Browse Numbers in This Prefix

510-623-0000-0999 510-623-1000-1999 510-623-2000-2999 510-623-3000-3999 510-623-4000-4999 510-623-5000-5999 510-623-6000-6999 510-623-7000-7999 510-623-8000-8999 510-623-9000-9999

Sample Numbers

(510) 623-0000 (510) 623-1234 (510) 623-2000 (510) 623-3333 (510) 623-4444 (510) 623-5555 (510) 623-6000 (510) 623-7777 (510) 623-8888 (510) 623-9999