Ideal for multi-server projects and multi-paged web sites. Offers $10,000 warranty and protects multiple sub-domain. RapidSSL Wildcard Certificates help you secure multiple subdomains with one low-cost SSL certificate issued to *.yourdomain.com. Protect your customers' personal data with up to 256-bit encryption. Automated domain control validation makes site authentication a breeze. At RapidSSL, we believe in providing the SSL protection you need at a competitive price.