Subdomain

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 it might use the subdomain.

^ 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.

[RFC_1034_section_3.1-1] 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.

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