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How many root DNS servers are there?

Understand the Problem

The question is asking for the total number of root DNS servers that exist in the Domain Name System infrastructure, which are critical for resolving domain names to IP addresses on the internet.

Answer

Hundreds of servers, 13 IP addresses

There are hundreds of DNS root servers operating globally, but there are only 13 distinct IP addresses used to query them.

Answer for screen readers

There are hundreds of DNS root servers operating globally, but there are only 13 distinct IP addresses used to query them.

More Information

This setup allows for robust and distributed DNS services across the world while maintaining the perception of 13 root servers due to IP addressing.

Tips

A common mistake is to think there are only 13 physical servers instead of understanding the difference between the number of servers and the number of IP addresses.

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