Prefix Information
The prefix 309 is part of area code 608 serving Madison, Wisconsin.
This exchange contains 10,000 possible phone numbers (608-309-0000 through 608-309-9999).
Phone numbers with prefix 309 in area code 608. Location: Madison, Wisconsin.
The prefix 309 is part of area code 608 serving Madison, Wisconsin.
This exchange contains 10,000 possible phone numbers (608-309-0000 through 608-309-9999).