This course will be retired on January 6, 2020.
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Root Servers1:20 with Jason Seifer
The DNS root servers keep track of the root zone and keep track of all of the top level domains such as .com, .org, and more.
About Root Servers
- There are 13 total root servers located throughout the world.
- The root servers hold the root zone file which is the authoritative list of DNS servers for all TLDs.
- Without the root servers, there would be no internet.
Now we're going to talk about another crucial part of the DNS infrastructure
called the root servers.
So let's take a look at our example.com domain name.
The .dot top-level domain is controlled by something called the name servers,
but where do you get the name server information?
Well, that's controlled by something called the root servers.
The root servers keep track of something called the root zone.
The root zone is the first step in translating
a human readable host name into an IP address.
There are 13 total root servers, and they're located all throughout the world.
The contents of the root zone file is a list of names and numeric IP addresses
of the authoritative DNS servers for all of the top-level domains
such as .com, .org, .edu, or the country code top-level domains,
which we talked about earlier.
You can find a link below the video of all of the different top-level domains that are out there.
The root servers are headed up by a company called ICANN—
which stands for the Internet Corporation for Assigned Names and Numbers.
Without the root servers there would be no internet.
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