subdomain
Sign in to saveIn the Domain Name System (DNS) hierarchy, a subdomain is a domain that is a part of another (main) domain. For example, if a domain offered an online store as part of their website example.com, it might use the subdomain shop.example.com.
Described at
Definition of subdomain | PCMag
What does subdomain actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.
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Encyclopedic overview
10 sectionsContents
- Overview
- Techniques
- Subdomain usage
- Uses
- United Kingdom
- Vanity domain
- Server cluster
- Subdomains vs. directories
- See also
- References
In the Domain Name System (DNS) hierarchy, a subdomain is a domain that is a part of another (main) domain. For example, if a domain offered an online store as part of their website example.com, it might use the subdomain shop.example.com.
== Overview == The Domain Name System (DNS) uses a tree structure or hierarchy, where the nodes on the tree are domain names. Within this hierarchy, each node represents a domain name, and a subdomain is defined as a subset of a higher-level domain. Each label may contain from 0 to 63 octets. The full domain name may not exceed a total length of 253 ASCII characters in its textual representation.
Excerpted from Wikipedia’s “subdomain” article, available under the CC BY-SA 4.0 licence.