Verisign is a company that provides a range of internet infrastructure services, including domain name registration and management, and internet security services.
One of their key services is the management of the top-level domain (TLD) registries for some of the most commonly used TLDs on the internet, such as .com, .net, and .org. This means that Verisign is responsible for maintaining the database of registered domain names for these TLDs, and ensuring that domain name lookups are performed correctly.
Verisign also provides a range of security services, including digital certificate services, which are used to establish secure connections and authenticate the identity of websites and other online services. They also provide a service called Site Finder, which helps organizations find and register domain names that are relevant to their business.
Verisign is a trusted third party and is accredited by the Internet Corporation for Assigned Names and Numbers (ICANN) and the US Government, which is responsible for the overall management and coordination of the internet's domain name system (DNS) and other internet-related functions.