https://github.com/tdiprima/resolver-royale
Bash DNS benchmark tool that races 22 public resolvers across Mac/Ubuntu/RHEL and ranks them by latency, jitter, and reliability
https://github.com/tdiprima/resolver-royale
bash benchmark cli dns domain-name-system networking
Last synced: about 1 month ago
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Bash DNS benchmark tool that races 22 public resolvers across Mac/Ubuntu/RHEL and ranks them by latency, jitter, and reliability
- Host: GitHub
- URL: https://github.com/tdiprima/resolver-royale
- Owner: tdiprima
- License: mit
- Created: 2026-05-14T13:31:03.000Z (about 2 months ago)
- Default Branch: main
- Last Pushed: 2026-05-16T12:58:27.000Z (about 2 months ago)
- Last Synced: 2026-05-16T14:51:03.492Z (about 2 months ago)
- Topics: bash, benchmark, cli, dns, domain-name-system, networking
- Language: Shell
- Homepage:
- Size: 624 KB
- Stars: 0
- Watchers: 0
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# Resolver Royale
A cross-platform DNS benchmark that races 22 public resolvers against your current DNS and tells you which one is actually fastest from your location.
## Your DNS Might Be Slower Than It Should Be
ISP-assigned DNS resolvers are often the bottleneck you never think to check. Switching to a faster public resolver can shave milliseconds off every single network request your machine makes — page loads, API calls, `git fetch`, package installs. The catch: "fastest" depends entirely on where you are. Cloudflare wins in some regions, Google in others, Quad9 somewhere else. Without measuring from your own machine, you're guessing.
## Benchmark, Rank, Apply
Resolver Royale fires 50 queries per server (5 iterations across 10 popular domains) against 22 DNS providers — including your current resolver — and scores each one on a weighted composite of average latency, median latency, jitter, and reliability. Results are ranked with letter grades (A+ through F), and the winner comes with a copy-paste command to switch your DNS immediately.
Supported on macOS, Ubuntu/Debian, and RHEL/Rocky/CentOS.
## Example
```
Current DNS: 192.168.1.1
Source file: /etc/resolv.conf
Benchmarking 23 servers — this takes ~1–2 minutes …
Rank Name IP Avg Med Jitter Rel% Score Grade
──── ──────────────────────── ─────────────── ───── ───── ────── ───── ───── ─────
1 Cloudflare 1.1.1.1 8.2ms 6.0ms 42ms 100% 90.3 A
2 Google 8.8.8.8 12.1ms 10.0ms 38ms 100% 87.6 A-
3 Quad9 9.9.9.9 15.4ms 12.0ms 51ms 100% 84.1 B+
...
╔══════════════════════════════════════════════════════════════════╗
║ 🏆 Fastest DNS: Cloudflare
║ IP: 1.1.1.1
║ Score: 90.3 (A)
╚══════════════════════════════════════════════════════════════════╝
```
## Usage
```bash
# Run the benchmark
./dns-benchmark.sh
# Apply the fastest DNS (requires sudo)
sudo ./dns-benchmark.sh --apply
# Restore DHCP defaults
sudo ./dns-benchmark.sh --restore
```
### Requirements
- `dig` and `bc`
```bash
# Ubuntu/Debian
sudo apt install -y dnsutils bc
# RHEL/Rocky/CentOS
sudo dnf install -y bind-utils bc
# macOS
brew install bind
```
## License
[MIT](LICENSE)