← Back to Library Internet & Networking Beginner 6 min read

What Is a Domain Name? TLDs, SLDs, Subdomains, and Registrars

A domain name is a human-friendly web address (such as cometflow.com) registered through an accredited domain registrar that points visitors to web servers across the internet.

💡 Plain-English Analogy

Think of the internet like real estate: the hosting server is the plot of physical land, your website code is the house built on the land, and the domain name is the attractive street sign out front that makes it easy for friends to find your house.

⚙️ Architecture & Under the Hood

Domain names form a right-to-left hierarchical tree structure under ICANN governance. At the apex is the invisible root dot (.), followed by generic and country-code Top-Level Domains (.com, .org, .io, .de), the Second-Level Domain (cometflow), and optional subdomains (api, docs, app).

Anatomy of a Complete Domain Name

Deconstructing a modern fully qualified domain name (FQDN).

https://  api  .  cometflow  .  com  /v1/tools
└──┬───┘  └─┬─┘   └───┬────┘    └─┬─┘  └──┬────┘
Protocol  Subdomain   SLD        TLD     Path

Frequently Asked Questions

Do you ever permanently "own" a domain name?

Technically no; you lease the rights to use a domain name from an accredited registrar for renewable periods ranging from 1 to 10 years at a time.