The scenario
A user's website resolves to the wrong IP address, and the flowchart guides troubleshooting from local DNS cache to ISP-level issues.
What is in this drawing
Read the decisions behind it.
01
Check whether the wrong IP is from local DNS cache
02
Compare ISP DNS answer with a public resolver
03
Switch to public DNS as a temporary workaround
Use when diagnosing DNS resolution errors caused by stale or poisoned caches at the local or ISP level.
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