Illinois Change of Contact Information OFOF 25A is a form issued by the Illinois Department of Financial and Professional Regulation (ID FPR) to update contact information for individuals, corporations, limited liability companies, and other entities licensed or registered with ID FPR. The form is used to update contact details such as name, address, phone number, and email address. There are two types of Illinois Change of Contact Information OFOF 25A: one for individuals and one for entities. Both forms must be completed in full and submitted along with the appropriate fee to ID FPR.