{"id":534,"date":"2026-10-26T03:48:11","date_gmt":"2026-10-26T03:48:11","guid":{"rendered":"https:\/\/sitefitters.com\/learn\/glossary\/dns\/"},"modified":"2026-10-26T03:48:11","modified_gmt":"2026-10-26T03:48:11","slug":"dns","status":"publish","type":"page","link":"https:\/\/sitefitters.com\/fr\/learn\/glossary\/dns\/","title":{"rendered":"DNS (Domain Name System)"},"content":{"rendered":"
Learn<\/a> \/ Glossary<\/a> \/ Domains & DNS<\/a><\/div>

DNS (Domain Name System)<\/em><\/h1>
In one sentence<\/small>DNS, the Domain Name System, is the internet’s directory that translates domain names into the numeric addresses computers use to find websites and email servers.<\/div><\/div><\/section>

What It Is<\/h2>

DNS stands for Domain Name System. It is the directory that turns a domain name like smithplumbing.com into the numeric IP address of the server that holds the website. It works like the contacts list on your phone: you pick a name, and the phone looks up the number. Every time someone visits your site or sends you email, a DNS lookup happens in the background.<\/p>

Why It Matters for Your Business<\/h2>

Your DNS settings decide where your website lives and where your email is delivered. If they are wrong, customers may see an error page or emails may vanish. When a business moves its website to a new host, the change is made in DNS, which is why careful DNS edits matter during any move.<\/p>

Good to Know<\/h2>

Before changing DNS, take a screenshot or export of every existing record. Many outages happen when someone deletes an email record while updating the website record. Make one change at a time and test. After each change, check that your website loads and that a test email arrives before moving on to the next one.<\/p>

Related terms<\/h4>
Nameserver<\/a>DNS record<\/a>A record<\/a>MX record<\/a>DNS propagation<\/a><\/div><\/div>