Every web player needs to master these points!
By mastering DNS, you can FREE with your websites and domain names! 👇
Learn the essentials in 2 intense, effective minutes instead of a boring 3-hour course. 🤯
What is the DNS system?
📄 The Domain Name System is the digital highway that makes a domain name (e.g. lrob.fr or google.com) accessible. Basically, we "point" the domain to a destination.
Examples:
- If you visit a domain like lrob.fr, your web browser makes a DNS resolution request in the background to find out the IP address of the server hosting the site.
- When you send an e-mail, further requests are made to find the destination mail server and authenticate the sender.
How does the DNS system work?
1 - Registrar 🏢
Domain names such as lrob.fr are registered with a "registrar" such as HaiSoft, Gandi, NameCheap, OVH and others.
Each registrar must go through a "registry" which is the authority for domain name extensions. For example :
- .en AFNIC
- .com / .net Verisign
- .org Public Interest Registry (PIR)
2 - NS (Name Servers) 🌍
To make a domain "resolvable" (accessible), it must have "name servers" or NS (Name Servers).
NSs contain the domain's pointing information and are said to be "authoritative". Always define at least two NS for redundancy. The registrar sends this information to the registry.
ℹ️ The domain owner ("registrant") is free to use the NS of his choice, or even to create his own, using values called Glue Records.
Various providers exist and you can create your own directly with a little knowledge. This is the case, for example, with lrob.net, my infrastructure domain with a complete autonomous DNS system supplied to all hosted customers to centralize their DNS management independently of the registrar used. How convenient!
3 - DNS zone 🌐
⚠️ This is what you absolutely must master!
NS servers contain the domain's DNS zone. It is this DNS zone that contains the actual pointing values.
For example:
- the IP of the server hosting the site
- IP or host name of mail server
- Meta-information such as the list of servers authorized to send mail for a domain.
Click here to discover all possible DNS values and how to manage your DNS zone via LRob.
What do we do with all this?
You're now free to register a domain name with any registrar, to manage your NS (and therefore your DNS zone) wherever you like. And your sites and e-mails can be placed with as many different providers as you like, with complete freedom thanks to DNS zone settings!
To never go wrong with your DNS, choose a Hosting LRob ! 💪
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