Freedom251 › DNS Server Software
Knot DNS
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Knot DNS | Free to download and use · Open-source authoritative DNS server · professional support programmes available separately | Free |
As knot-dns.cz lists them, read 3 Oct 2026. The maker's own page has the final word.
Facts from Knot DNS's own pages
- Configuration and modules
- It supports YAML or database-based configuration and dynamically loaded query-processing modules. · knot-dns.cz, 3 Oct 2026
- Deployment
- The software can be compiled and run on most UNIX-like systems, including Linux, BSD, and macOS. · knot-dns.cz, 3 Oct 2026
- DNSSEC
- It supports DNSSEC with NSEC and NSEC3, multithreaded zone signing and validation, and automatic DNSSEC key management. · knot-dns.cz, 3 Oct 2026
- Founded
- 1998 · knot-dns.cz, 28 Sept 2026
- Headquarters
- Prague, Czech Republic · knot-dns.cz, 28 Sept 2026
- License
- The current documentation states that Knot DNS is licensed under GNU GPL version 2.0 or later. · knot-dns.cz, 3 Oct 2026
- Maker
- The project is primarily sponsored by CZ.NIC, and its contact page lists the organization’s address in Prague, Czech Republic. · knot-dns.cz, 3 Oct 2026
- Protocols
- It supports DNS over UDP, TCP, TLS 1.3, and QUIC. · knot-dns.cz, 3 Oct 2026
- Purpose
- Knot DNS is a high-performance open-source server for authoritative DNS, suitable for TLDs and other zones. · knot-dns.cz, 3 Oct 2026
- Release lifecycle
- The download page lists Knot DNS 3.6.0, released September 8, 2026, with end of life in Q3 2028. · knot-dns.cz, 3 Oct 2026
- Resource planning
- The documentation estimates memory needs at roughly three times the plain-text zone size and advises measurement before production deployment. · knot-dns.cz, 3 Oct 2026
- Security features
- Its modules include response rate limiting, while TLS 1.3 and QUIC support opportunistic, strict, and mutual authentication profiles. · knot-dns.cz, 3 Oct 2026
- Server roles
- It supports primary and secondary server operation. · knot-dns.cz, 3 Oct 2026
- 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. · knot-dns.cz, 3 Oct 2026
- Zone operations
- It supports dynamic zone updates and full and incremental zone transfers (AXFR and IXFR). · knot-dns.cz, 3 Oct 2026
Where Knot DNS stands on Freedom251
- DNS Server Software#8 of 23