DNS (Domain Name System) tells the internet where your domain should direct traffic.
When someone types a domain name into a browser, DNS determines:
- Which server hosts the website
- Which service handles email
- Which tools are authorized to use the domain
Conceptually:
DNS acts like directions for your domain.
Where DNS Is Managed
DNS settings are managed either:
- At the domain registrar, or
- Through a dedicated DNS provider
It is common for domains and DNS to be managed in different systems.
Common DNS Record Types (High Level)
Most domain setups rely on a small number of record types:
A records — point domains to servers
CNAME records — alias one domain to another
MX records — route email
TXT records — verify ownership and support security
Incorrect DNS changes can affect website availability or email delivery.
Connecting a Domain to a Website
At a high level, making a website live involves:
Purchasing a domain
Selecting a hosting platform or site builder
Updating DNS to point the domain to that service
Changes may take time to propagate across the internet.
Subdomains
Subdomains are prefixes added to a domain, such as:
blog.example.com
They are typically used to separate functions or services but are not required for all sites.
Security and Privacy Considerations
WHOIS privacy protects personal contact information
SSL/HTTPS encrypts traffic and is required by modern browsers
Both are considered standard for modern websites.
Summary
DNS is the system that connects a domain to websites, email, and services. While powerful, most users interact with only a small portion of DNS functionality.