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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. How do you do a DNS lookup? How DNS works. What is a DNS resolver and a DNS resolution?
How DNS works. What is a DNS hierarchy?
DNSimple · 2015-07-25 · via How DNS works
  • There is pun here somewherePATIENCEWhile your query gets resolved
  • This office feels for sure like a typical dentist officePlease dig in silence while you wait for your turnHEADERQUESTIONANSWER
  • I wonder what are the classifieds are about in this newspaper
  • RT

    NEXT!

  • RT

    NNNEEEEXXXXT!!!

  • RT

    What can I help you with?

  • Root, I am trying to locate the IP address for the website dnsimple.com...

  • Do you know where I can find it?

  • RT

    Sorry resolver. I don't know where to find dnsimple.com.

  • RT

    But I can tell you where to find the .COM Top-level domain server!

  • Second chance to have a road trip. Puh-puh-pleaseROADTRIP
  • Saving .COM TLD address5 seconds remaning

    But first, I'll store this information, so I don't have to ask the root again.

  • RT

    This root server is just one of the 13 root name servers that exist today.

  • RT.COM.ORG.NETdomainsdomainsdomains

    Root servers sit at the top of the DNS hierarchy.

  • ABC

    They are scattered around the globe and operated by 12 independent organisations.

  • a.root-servers.net b.root-servers.net .... m.root-servers.net

    They are named [letter].root-servers.net where [letter] ranges from A to M.

  • Oh noes!Nightmares!

    This doesn't mean that we have only 13 physical servers to support the whole internet!

  • YAY!Less failures!Faster responses!AAAAAnycast!

    Each organisation provides multiple physical servers distributed around the globe.

  • I don't know if this looks like a car
  • We are big supporters of dogs here at dnsimple. And cats, we heart cats
  • Snow or ice on the ground?
  • And I drew this panel next to my pool at 32C. Cannot relateBRRBRR

  • Not my kind of road trip

    But we are now here...

  • We seem to have arrived to the house of the .COM TLD.COM

  • How will the .COM TLD server help our friend the resolver?

    Find out in the next episode of how DNS works.

    Next Episode

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