Which command is shown for performing a reverse DNS lookup with dnsrecon on a specific IP range?

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Multiple Choice

Which command is shown for performing a reverse DNS lookup with dnsrecon on a specific IP range?

Explanation:
Reverse DNS lookups resolve an IP address to its hostname by querying PTR records. To perform this across a specific IP range with dnsrecon, you use the -r option followed by the start and end of the range. The command dnsrecon -r 162.241.216.0-162.241.216.255 asks for PTR records for every IP from 162.241.216.0 to 162.241.216.255, effectively enumerating the reverse DNS for that entire range. This is distinct from nslookup, which would query a PTR for a single IP, and from tracert or whois, which serve different purposes (tracert shows path hops; whois provides registration details).

Reverse DNS lookups resolve an IP address to its hostname by querying PTR records. To perform this across a specific IP range with dnsrecon, you use the -r option followed by the start and end of the range. The command dnsrecon -r 162.241.216.0-162.241.216.255 asks for PTR records for every IP from 162.241.216.0 to 162.241.216.255, effectively enumerating the reverse DNS for that entire range. This is distinct from nslookup, which would query a PTR for a single IP, and from tracert or whois, which serve different purposes (tracert shows path hops; whois provides registration details).

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