Prefix Information

The prefix 340 is part of area code 858 serving San Diego, California.

This exchange contains 10,000 possible phone numbers (858-340-0000 through 858-340-9999).

Browse Numbers in This Prefix

858-340-0000-0999 858-340-1000-1999 858-340-2000-2999 858-340-3000-3999 858-340-4000-4999 858-340-5000-5999 858-340-6000-6999 858-340-7000-7999 858-340-8000-8999 858-340-9000-9999

Sample Numbers

(858) 340-0000 (858) 340-1234 (858) 340-2000 (858) 340-3333 (858) 340-4444 (858) 340-5555 (858) 340-6000 (858) 340-7777 (858) 340-8888 (858) 340-9999