Prefix Information
The prefix 311 is part of area code 531 serving Omaha, Nebraska.
This exchange contains 10,000 possible phone numbers (531-311-0000 through 531-311-9999).
Phone numbers with prefix 311 in area code 531. Location: Omaha, Nebraska.
The prefix 311 is part of area code 531 serving Omaha, Nebraska.
This exchange contains 10,000 possible phone numbers (531-311-0000 through 531-311-9999).