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53 - Pentesting dns

DNS stands for "Domain Name System". It is a decentralized system for mapping domain names (such as to IP addresses (such as The DNS is like a phone book for the internet, translating human-friendly domain names into the numerical addresses that computers use to communicate with each other. When you type a domain name into your web browser, your computer sends a request to a DNS server, which looks up the corresponding IP address and returns it, allowing your computer to establish a connection to the desired website.


sudo nmap -p 53 -sV -sC -Pn -vv $IP


dig 53

dig @$IP chaos version.bind txt 
dig @$IP chaos hostname.bind txt 
dig @$IP chaos authors.bind txt 
dig @$IP chaos ID.server txt

dig - zone transfer

dig axfr @$IP