How DNS Works: Unraveling the Internet's Invisible Phone Book
At Mediawax, we believe that a strong online foundation starts with a well-understood technical understanding. That is why we explain DNS in five easy-to-understand steps.
DNS: Why is it necessary?
In the early years of the internet (the ARPANET), every computer had a unique number: an IP address. Think of something like 185.27.134.112. This is perfect for computers, but impossible for humans to remember.
That is why DNS was invented. DNS is the internet's big, invisible phone book. It translates a name that humans can remember (such as mediawax.be) into the technical IP address of the server hosting the website.
The 5 Steps of the DNS Process
Here is the "behind the scenes" route in fractions of a second:
Step 1: You type in the URL
You start your search by typing mediawax.be into your browser.
Step 2: The browser requests the DNS Resolver
Your computer first checks if the IP address is not already in its own memory (the 'cache'). If not, it sends a request to your internet provider's DNS Resolver.
Step 3: The Resolver checks its cache
The DNS Resolver checks its own cache to see if it has recently looked up and remembered the IP address of mediawax.be. If not, it begins its search.
Step 4: The Resolver checks the Extension servers
The Resolver goes "knocking on the door" of the extension's official servers. In our case: the .be servers. It asks: "Who is the Nameserver for mediawax?"
Step 5: The Nameserver responds with the IP address
The .be server responds: "The Nameservers for mediawax are ns1.mediawax.be and ns2.mediawax.be. Ask them." The Resolver connects to the official Nameserver of mediawax.be and obtains the final IP address: 185.27.134.112. The Resolver tells this to your browser, which loads the website immediately.
Why is this important for your business?
The DNS process is fundamental to everything you do online:
Online Findability: Without DNS, your website is unfindable via your domain name.
Brand Protection: DNS errors can cause your emails not to arrive or your website to be temporarily offline.
SEO: DNS issues can negatively impact your SEO scores.
Security: Ensure strong, professional Nameservers and configure them correctly to prevent hijackers and phishing attacks.
Conclusion
DNS is a complex and fundamental part of the internet, but with these 5 steps, you have unraveled the basics. Understanding the "phone book of the internet" helps you build a strong digital foundation.
