How Traceroute can know domain name of Hops?

StackOverflow https://stackoverflow.com/questions/10570348

  •  08-06-2021
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题

I'm studying the ICMP protocol and the tool traceroute. I don't understand how can traceroute look up the domain names of Hops if in the ICMP datagram only the IPs can be found. How does it work?

Thank you!

有帮助吗？

解决方案

It's called reverse DNS, and is basically the opposite of a domain-to-IP lookup.

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