Verisign is a global provider of domain name registry services and internet security services and specializes in DDoS protection software services, managed DNS services, and internet infrastructure services. Verisign operates and manages 2 of the 13 root zone servers that contain authoritative data for top DNS hierarchy and supports various Top-Level Domains (TLDs), such as .com, .net, .cc, .tv, .gov, .jobs, .edu, and .name domain names. The company protects DNS infrastructures for over 148.3 million domain names and offers support for both DNSSEC and IPv6.