800-428-8329 Contact SILA; Contact Us. SILA P.O. Box 498, Zionsville, IN 46077-0498 Phone: 800-428-8329 Fax: 866-253-6026 Email: silasupport@ sila.org. Who We Are. The Securities and Insurance Licensing Association (SILA) delivers the education, information, and connections you need for success in this complex industry.