Prefix Information
The prefix 400 is part of area code 323 serving Los Angeles, California.
This exchange contains 10,000 possible phone numbers (323-400-0000 through 323-400-9999).
Phone numbers with prefix 400 in area code 323. Location: Los Angeles, California.
The prefix 400 is part of area code 323 serving Los Angeles, California.
This exchange contains 10,000 possible phone numbers (323-400-0000 through 323-400-9999).