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Subdomain

For a protein domain inside of a larger domain, see Protein domain.

In the Domain Name System (DNS) hierarchy, a subdomain is a domain that is a part of another (main) domain.[1] For example, if a domain offered an online store as part of their website example.com, it might use the subdomain shop.example.com .

  1. ^ P. Mockapetris (November 1987). "Name space specifications and terminology". Domain names - concepts and facilities. IETF. sec. 3.1. doi:10.17487/RFC1034. RFC 1034. Retrieved 2008-08-03.