DNS responses often present a challenge due to their complexity. Understanding the response codes like NOERROR, NXDOMAIN, SERVFAIL, and REFUSED is crucial for diagnosis.
A NOERROR DNS response indicates successful retrieval of resource records matching the queried hostname and record type, making it the desired outcome in DNS queries.
When diagnosing DNS issues, it's important to recognize the two types of DNS servers: authoritative nameservers for your domain and local recursive resolvers that fetch records.
DNS responses include a response code and a series of resource records. Familiarity with common codes is essential for resolving issues related to domain name resolution.
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