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How DNS works

How DNS works. What is DNS? Learn how step by step. How DNS works. How to create DNS glue records? How DNS works. How to look up authoritative name servers address? How DNS works. What are authoritative name servers? How DNS works. What is a DNS hierarchy? How DNS works. What is a DNS resolver and a DNS resolution?
How DNS works. How do you do a DNS lookup?
DNSimple · 2015-08-01 · via How DNS works
  • At least there is a fire in this .COM TLD igloo
  • The spear will be my favorite one if I had to choose one on this display
  • .COM

    Well, it's much more comfortable than I imagined...

  • ...What do you do when they recommend 'room temperature' for certain drinks?

  • That face when people try but fail at your attempt to be nice.COMBAD JOKE?WAT??!?
  • Sorry! I am looking for dnsimple.com, do you know where I can find it?

  • .COM

    Now, that's a great question!

  • The coordination of most top-level domains (TLDs) belong to the Internet Corporation for Assigned Names and Numbers (ICANN)

  • .COM

    The .COM TLD was one of the first created in 1985.

    And today, it is the largest TLD on the internet.

  • .FR.JP

    Other type of TLDs include:

    1. Country code TLDs. Usually, their 2 letter ISO code.

  • TLDs written in native languages!AWESOME!!

    2. Internationalized country code TLDs.

  • 3. Generic TLDs: .NET, .ORG, .EDU, etc...

    Usually, TLDs with 3 or more letters.

  • dnsimple.comIP address??Domain??10.0.0.1

    4. Infrastructure TLDs: .ARPA, mostly used for reverse DNS lookups.

    The opposite of what we are doing now.

    We are doing this:

    Reverse DNS does this:

  • .HOT .PIZZA .APP .CLAIMS .DENTIST .HEALTH …

    And today, many new generic TLDs are being created!

  • .COM

    Now, back to your question resolver!

  • square-tires.com pizza-money.com cat-rehab.com yoga-sponge.com

    I am afraid I don't know the IP address for dnsimple.com

  • .COMns1.dnsimple.com ns2.dnsimple.com ns3.dnsimple.com ns4.dnsimple.com

    But I have found the name servers!

  • Great! I'll store that information for later

  • What's your ideal road trip? Pause and imagine it for a minuteROADTRIP
  • The .COM found the authoritative name servers for the domain dnsimple.com.

  • ns1.dnsimple.com ns2.dnsimple.com ns3.dnsimple.com ns4.dnsimple.com

    But what do these names mean?

    We'll find out very soon...

  • So the journey continues...

  • Who are the authoritative name servers?

    Find out in the next episode of how DNS works.

    Next Episode