A cross-platform CLI tool to benchmark public DNS servers and set the fastest one
Project description
simurgh-dns
A cross-platform CLI tool to benchmark public DNS servers and set the fastest one.
Features
- Benchmarks 15 DNS providers (30 server IPs) with concurrent testing
- Measures latency (avg/min/max) and reliability per server
- Beautiful terminal output with Rich tables and progress bars
- Cross-platform DNS configuration — set the best DNS on macOS, Linux, and Windows
- JSON output mode for scripting and automation
- Installable via
pip— works anywhere Python runs
Installation
pip install simurgh-dns
Or with uv:
uv pip install simurgh-dns
Quick Start
Run the benchmark:
simurgh-dns
This will:
- Benchmark all DNS servers (3 rounds by default)
- Display a ranked table of results
- Offer to set the fastest DNS on your system
Usage
# Run benchmark with custom rounds
simurgh-dns --rounds 5
# Output results as JSON
simurgh-dns --json
# Benchmark only (don't offer to change DNS)
simurgh-dns --no-set
# Directly set a specific DNS server
simurgh-dns --set 1.1.1.1
# Reset DNS to DHCP default
simurgh-dns --reset
# Show version
simurgh-dns --version
You can also run it as a Python module:
python -m simurgh_dns
Supported Platforms
| Platform | Benchmark | Set DNS | Method |
|---|---|---|---|
| macOS | Yes | Yes | networksetup |
| Linux | Yes | Yes | resolvectl / /etc/resolv.conf |
| Windows | Yes | Yes | netsh |
Note: Setting DNS requires elevated privileges (
sudoon macOS/Linux, Administrator on Windows).
DNS Providers
| Provider | Primary | Secondary |
|---|---|---|
| 8.8.8.8 | 8.8.4.4 | |
| Cloudflare | 1.1.1.1 | 1.0.0.1 |
| Quad9 | 9.9.9.9 | 149.112.112.112 |
| OpenDNS | 208.67.222.222 | 208.67.220.220 |
| AdGuard | 94.140.14.14 | 94.140.15.15 |
| NextDNS | 45.90.28.0 | 45.90.30.0 |
| CleanBrowsing | 185.228.168.9 | 185.228.169.9 |
| Comodo Secure | 8.26.56.26 | 8.20.247.20 |
| Level3 | 4.2.2.1 | 4.2.2.2 |
| Verisign | 64.6.64.6 | 64.6.65.6 |
| Norton/LifeLock | 199.85.126.10 | 199.85.127.10 |
| Yandex | 77.88.8.8 | 77.88.8.1 |
| DNS.WATCH | 84.200.69.80 | 84.200.70.40 |
| Freenom | 80.80.80.80 | 80.80.81.81 |
| Alternate DNS | 76.76.19.19 | 76.223.122.150 |
Requirements
- Python 3.13+
Contributing
See CONTRIBUTING.md for development setup and guidelines.
License
MIT License. See LICENSE for details.
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