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DNS Troubleshooting Notes You Can Reuse

DNS Troubleshooting Notes You Can Reuse

DNS problems are often confusing because the failure may appear far away from the actual cause. A page may load slowly, fail completely, or resolve to the wrong server.

Start here

  • Use dig example.com to see the raw DNS answer.
  • Check whether your resolver is reachable.
  • Compare the result from two different networks if possible.

Practical tip

When DNS is the suspect, test both the domain name and the IP address directly so you can separate name resolution problems from connectivity problems.

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