Episode 5
Respect my authority!
-
How could the .COM TLD server point me to the authoritative name servers?
-
How could he make the connection? There are so many .COM domains!
-
Easy! With the help of the Domain Registrar!
-
When a domain is purchased, the domain registrar reserves the name...
-
... and communicates to the TLD registry the authoritative name servers.
-
We have arrived!
-
Papers, please!
-
Oh! I'll be quick. I have no intention of staying here. I am looking for ns1.dnsimple.com.
-
Papers, please!
-
Oh boy! The only thing I have is a request for dnsimple.com. The .COM TLD told me that ns1.dnsimple.com could tell me where I could locate the IP address.
-
Well, in that case...
-
I am ns1.dnsimple.com
-
And I can provide you with that answer!
-
Currently there are 4 of us that know how to resolve any domain managed by dnsimple.com
-
We provide answers to DNS queries: Websites, e-mail, ...We are the ultimate authority on this stuff.
-
No cached values. Not asking someone else. Only the real deal.
-
You see, usually there is more than one name server attached to any domain.
-
You, the resolver, you are given this list in some unknown order.You might query the first name server in the list.OR NOT! We have to be ready!
-
Because there is more of us, the work load is better distributed.And the DNS zone availability is increased.
-
Especially in case of a failure!
-
So if you want to know who are the authoritative name servers for your domain, run a WHOIS query.There are a few websites that provide this information.
-
So here you go: 50.31.213.210
-
What?
-
dnsimple.com IP address is: 50.31.213.210Anything else?
-
Uh, no. Thanks!
-
I guess I'll save that.
-
The resolver finally got the answer he was looking for! Hurray for the Authoritative name server!
-
Time to go home!