Verisign, Inc. is an American company based in Reston, Virginia, that operates a diverse array of network infrastructure, including two of the Internet's thirteen root nameservers, the authoritative registry for the .com, .net, .web and .name generic top-level domains and the .cc country-code top-level domains, and the back-end systems for the .jobs and .edu sponsored top-level domains. In 2010, Verisign sold its authentication business unit – which included Secure Sockets Layer certificate, public key infrastructure, Verisign Trust Seal, and Verisign Identity Protection services – to Symantec for $1.28 billion. The deal capped a multi-year effort by Verisign to narrow its focus to its core infrastructure and security business units. Symantec later sold this unit to DigiCert in 2017. On October 25, 2018, NeuStar, Inc. acquired VeriSign's Security Service Customer Contracts. The acquisition effectively transferred Verisign Inc.'s Distributed Denial of Service protection, Managed DNS, DNS Firewall and fee-based Recursive DNS services customer contracts.