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Knot DNS
knot-dns.cz
Spec sheet
- Purpose
- Knot DNS is a high-performance open-source server for authoritative DNS, suitable for TLDs and other zones.Read 3 Oct 2026 · knot-dns.cz
- Deployment
- The software can be compiled and run on most UNIX-like systems, including Linux, BSD, and macOS.Read 3 Oct 2026 · knot-dns.cz
- Support
- Free community support is available on a best-effort basis through a mailing list, chat, and issue tracker; professional support programmes are also offered.Read 3 Oct 2026 · knot-dns.cz
- License
- The current documentation states that Knot DNS is licensed under GNU GPL version 2.0 or later.Read 3 Oct 2026 · knot-dns.cz
- Headquarters
- Prague, Czech RepublicRead 28 Sep 2026 · knot-dns.cz
- Founded
- 1998Read 28 Sep 2026 · knot-dns.cz
- Maker
- The project is primarily sponsored by CZ.NIC, and its contact page lists the organization’s address in Prague, Czech Republic.Read 3 Oct 2026 · knot-dns.cz
- Configuration and modules
- It supports YAML or database-based configuration and dynamically loaded query-processing modules.Read 3 Oct 2026 · knot-dns.cz
- DNSSEC
- It supports DNSSEC with NSEC and NSEC3, multithreaded zone signing and validation, and automatic DNSSEC key management.Read 3 Oct 2026 · knot-dns.cz
- Protocols
- It supports DNS over UDP, TCP, TLS 1.3, and QUIC.Read 3 Oct 2026 · knot-dns.cz
- Release lifecycle
- The download page lists Knot DNS 3.6.0, released September 8, 2026, with end of life in Q3 2028.Read 3 Oct 2026 · knot-dns.cz
- Resource planning
- The documentation estimates memory needs at roughly three times the plain-text zone size and advises measurement before production deployment.Read 3 Oct 2026 · knot-dns.cz
- Security features
- Its modules include response rate limiting, while TLS 1.3 and QUIC support opportunistic, strict, and mutual authentication profiles.Read 3 Oct 2026 · knot-dns.cz
- Server roles
- It supports primary and secondary server operation.Read 3 Oct 2026 · knot-dns.cz
- Zone operations
- It supports dynamic zone updates and full and incremental zone transfers (AXFR and IXFR).Read 3 Oct 2026 · knot-dns.cz
Plans and prices
Knot DNS Free Free to download and use Open-source authoritative DNS server · professional support programmes available separately Read 3 Oct 2026 · knot-dns.cz
Where Specifiction places it
- DNS Server Software#9 of 237.7
