Domain Name
ELI5 — The Vibe Check
A domain name is the human-friendly name for a website, like 'google.com' instead of '142.250.80.46'. You buy it from a domain registrar and it's yours as long as you keep paying the yearly fee. Think of it as renting a memorable street address.
Real Talk
A domain name is a human-readable identifier that maps to one or more IP addresses via DNS. It has a hierarchical structure: subdomain.secondlevel.tld (e.g., blog.example.com). Domain names must be registered through accredited registrars.
Show Me The Code
# Domain structure breakdown
blog.example.com
# 'blog' = subdomain
# 'example' = second-level domain (SLD)
# 'com' = top-level domain (TLD)
When You'll Hear This
"Register the domain name before someone else grabs it." / "Point the domain name to the server's IP."
Related Terms
A Record
An A Record is the most basic DNS record — it just says 'this domain name = this IP address.' It's the phonebook entry itself.
CNAME (Canonical Name Record)
A CNAME is a DNS record that's like an alias or nickname. Instead of pointing to an IP address directly, it points to another domain name. So 'www.
DNS (Domain Name System)
DNS is the internet's phonebook. You type 'google.
Domain Registrar
A domain registrar is the shop where you buy domain names. Think Namecheap, GoDaddy, or Google Domains. You pay them yearly to 'own' your domain name.
Nameserver
A nameserver is the specific server that actually knows all the DNS records for your domain — it's the authoritative source of truth.