Prefix Information
The prefix 621 is part of area code 517 serving Lansing, Michigan.
This exchange contains 10,000 possible phone numbers (517-621-0000 through 517-621-9999).
Phone numbers with prefix 621 in area code 517. Location: Lansing, Michigan.
The prefix 621 is part of area code 517 serving Lansing, Michigan.
This exchange contains 10,000 possible phone numbers (517-621-0000 through 517-621-9999).