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Full DNS Diagnostics
DNS
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Real DNS resolution — NS, SOA, MX, WWW, PTR, glue records and RFC validation
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google.com
cloudflare.com
github.com
amazon.com
Analyzing
Querying parent TLD nameservers
Fetching NS records & resolving IPs
Testing each nameserver directly
Reading SOA record
Resolving MX records & PTR lookups
Checking WWW A / AAAA records
Running RFC checks