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A nameserver change is an incidentTenium can watch NS records and alert before a delegation change takes the whole zone with it.
Start freeWhat NS records are
NS records name the servers that hold the zone. They are published both in the zone and in the parent (the registry). This check shows what a public resolver returns, which is usually the set from the parent after it has cached.
Two servers, minimum
A zone should list at least two nameservers on independent networks. One NS is a single point of failure for every other record.
Related checks
SOA lookup · DNS lookup · A lookup · DNS monitoring
Command-line equivalent
dig +short example.com NSMore free tools
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