Here is an example of a typical hostname that would be stored in a DNS for geolocating the hostname's address and would be assigned to a PC connected to the internet via Comcast: "." where: 61.123.45.67 is the hostname's IP address, "CO" stands for Colorado, and is the ISP hosting the end-user. In IT architecture, hostnames have the role of differentiating clients.Īccording to the RFC 1123 protocol, the hostname's total length is limited to 255 characters, and it comprises the hostname and the domain name labels separated by periods. Sometimes domain names are the same as hostnames, but this is not a general rule. Since hostnames are frequently confused with domains, it's good to know that multiple hosts can be grouped under one domain, just like subdomains. Each internet user gets this one-to-one description, regardless of whether it's a network node at the internet provider, a computing machine, or a web server. Simply put, the hostname is the nickname given to any computer or device hooked up to a computer network. They are the absolutely and uniquely differentiating addresses that computers use to communicate with each another within a network, be it local network (LANs) or global networks like the internet. Historically, hostnames represented a name resolution for IP addresses. A hostname (also known as a "node name", "computer name", or "site name") is a unique Fully Qualified Domain Name (FQDN) that identifies every hardware device (host) connected to the internet via the Domain Name System (DNS) naming hierarchy.
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