Which item performs name server lookup?

Which item performs name server lookup?

• A. Recon-Dog
• B. NS Lookup
• C. OSINT Framework
• D. BillCipher

Answer: (B)

Performing a name server lookup means querying DNS to find the authoritative name servers for a domain and to retrieve related DNS records. The tool designed for this purpose is nslookup. You can query a DNS server for specific record types (such as NS to find the authoritative servers, or A/AAAA for IP addresses), and nslookup will return the results. This is a common step in recon or OSINT to map a domain to its infrastructure and validate which servers actually respond for that domain. Other items listed are broader reconnaissance resources or frameworks, not the direct utility for querying DNS records. They can help collect information in bulk or provide links to various tools, but they don’t perform the name server lookups themselves.

Performing a name server lookup means querying DNS to find the authoritative name servers for a domain and to retrieve related DNS records. The tool designed for this purpose is nslookup. You can query a DNS server for specific record types (such as NS to find the authoritative servers, or A/AAAA for IP addresses), and nslookup will return the results. This is a common step in recon or OSINT to map a domain to its infrastructure and validate which servers actually respond for that domain.

Other items listed are broader reconnaissance resources or frameworks, not the direct utility for querying DNS records. They can help collect information in bulk or provide links to various tools, but they don’t perform the name server lookups themselves.