Prefix Information
The prefix 421 is part of area code 651 serving St. Paul, Minnesota.
This exchange contains 10,000 possible phone numbers (651-421-0000 through 651-421-9999).
Phone numbers with prefix 421 in area code 651. Location: St. Paul, Minnesota.
The prefix 421 is part of area code 651 serving St. Paul, Minnesota.
This exchange contains 10,000 possible phone numbers (651-421-0000 through 651-421-9999).