NSD - Authoritative DNS Name Server
A high-performance authoritative DNS server developed by NLnet Labs for operations where speed, reliability, stability, and security are paramount.
Why NSD?
NSD is designed with a pure philosophy that prioritizes raw performance. If you serve hundreds of thousands or even millions of queries per second, NSD is the leading implementation in the world.Extreme Performance
Optimized C implementation with multi-process architecture for maximum throughput
DNSSEC Ready
Full DNSSEC support with efficient signing and validation
Battle-Tested
Powers some of the world’s largest DNS infrastructures
RFC Compliant
Reference implementation for emerging IETF DNS standards
Key Features
Zone Transfers
AXFR and IXFR support for efficient zone replication
TSIG Security
Transaction signatures for secure zone transfers
Catalog Zones
Automated zone provisioning and management
XDP Support
Express Data Path for extreme performance
Rate Limiting
Response rate limiting to mitigate DDoS attacks
Remote Control
Powerful nsd-control utility for management
Quick Navigation
Installation Guide
Build from source or install from packages
Quickstart Tutorial
Get NSD running in minutes
Configuration Reference
Complete configuration options
Operations Guide
Running and managing NSD
Production-Ready
NSD has been developed for operations in environments where speed, reliability, stability, and security are of high importance. It serves as the authoritative DNS server for numerous top-level domains and large-scale DNS infrastructures worldwide.NSD is distributed free of charge under the BSD-3-Clause license. For most platforms, packages are available through your system’s package manager.