Today (May 10th), from 4-8 p.m., you can get a FREE ice cream cone from Haagen Dazs at their nationwide FREE Cone Day Event.
Some stores are certified kosher, but all their individual ice cream flavors are. And here is more information from their FAQs:
Our U.S. retail grocery, club, and convenience store products are OU-D kosher, certified by the Kashrut division of the Union of Orthodox Jewish Congregations of America. Products at our Häagen-Dazs® Shops and restaurants are not necessarily certified kosher because of the utensils and other ingredients used to serve frozen desserts or drinks.