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DNS NXDOMAIN – No-existent domain name
What does this error mean?
The DNS server indicates that the name requested does not exist in the solved area.
Probable causes
- name misunderstood
- absent recording
- bad DNS area
- negative cache after deletion or migration
Verification and resolution
- Check the exact FQDN
- Ask the area’s authority server
- Control A/AAAA/CNAME records
- Count negative TTL before concluding after correction
Precaution: Creating a local bypass record can mask a DNS zone error.