Prefix Information
The prefix 550 is part of area code 618 serving Belleville, Illinois.
This exchange contains 10,000 possible phone numbers (618-550-0000 through 618-550-9999).
Phone numbers with prefix 550 in area code 618. Location: Belleville, Illinois.
The prefix 550 is part of area code 618 serving Belleville, Illinois.
This exchange contains 10,000 possible phone numbers (618-550-0000 through 618-550-9999).