DNS response code
The status a DNS server puts in every answer, such as NOERROR for success or NXDOMAIN for a name that does not exist.
In more detail
dig shows it in the status field of the header. SERVFAIL means the server failed to get an answer, often a broken upstream or signature.
Related terms
- DNS — The system that turns names such as learnsome.tech into IP addresses.
- NXDOMAIN — The DNS answer meaning the server looked and the name does not exist.
Taught in
- Client DNS: Files First, Then The Server — LPIC-1 Linux Administrator (101-500 and 102-500) Exam Prep