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Network

Troubleshoot DNS issues

Resolve DNS records and verify propagation.

Common DNS failures

NXDOMAIN, stale caches, or missing records are typical causes.

Step-by-step

Query authoritative records, compare with public resolvers, and confirm TTLs.

Quality checks

Verify IPv4/IPv6 records and confirm expected CNAME chains.

Checklist

  • •Check TTLs.
  • •Confirm A/AAAA.
  • •Verify CNAME chains.
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