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BIND

The Berkeley Internet Name Domain server.

BIND (Berkeley Internet Name Domain) is the most widely deployed DNS server software on the internet. It implements a recursive resolver, an authoritative server, and a stub resolver in a single package, making it the reference implementation against which the DNS protocol's actual behaviour is often discussed.

BIND descends from work at UC Berkeley in 1984 and has been the dominant DNS server through several major rewrites. BIND 4 was the original; BIND 8 (1997) and BIND 9 (2000) were major rewrites with substantial security improvements. Current maintenance happens at the Internet Systems Consortium under MPL-2.0 licensing.

BIND runs on most root nameservers, most TLD servers, and a substantial portion of the authoritative DNS for the global internet. For recursive resolution, Unbound has captured market share where pure recursion is needed; for authoritative use, NSD (also from NLnet Labs) and PowerDNS are competing implementations. BIND remains the choice when you want a do-everything DNS daemon with mature support for every weird corner of the protocol.

Debian/Ubuntu: sudo apt install bind9
Fedora/RHEL:   sudo dnf install bind
Arch:          sudo pacman -S bind