-Staib (4 points)
Hummel-Staib is a law firm in Germany that provides legal advice and litigation services to businesses, individuals, and local government entities. The first three digits of the number, 1.321, indicate the office of the firm, located in Stuttgart. The next four digits, 3400, are the four digit extension of that office. Finally, the 79 indicates the division of the firm located at that office, accounting, tax and consulting services.