Prefix Information
The prefix 300 is part of area code 512 serving Austin, Texas.
This exchange contains 10,000 possible phone numbers (512-300-0000 through 512-300-9999).
Phone numbers with prefix 300 in area code 512. Location: Austin, Texas.
The prefix 300 is part of area code 512 serving Austin, Texas.
This exchange contains 10,000 possible phone numbers (512-300-0000 through 512-300-9999).