DNS Latency Test

A simple Bash script to measure the latency and response time of multiple DNS servers.

Features

• Measures ping latency to DNS servers
• Checks DNS query response times
• Supports parallel execution for faster results
• Sorts results based on response time
• Highlights fastest and slowest DNS servers

Prerequisites

• bash shell
• ping command
• dig command (available in dnsutils package on Debian-based systems)

Installation

Clone the repository:

 git clone https://github.com/BaseMax/DNS-Latency-Test.git
 cd DNS-Latency-Test

Usage

Run the script:

 ./dns-latency-test.sh

Configuration

• Edit dns-servers.txt to add or remove DNS servers.
• Modify the PING_TIMEOUT variable in the script to change the timeout duration.

Example Output

Testing DNS latency (Max: 10s)...
------------------------------------------------------
DNS Server          Ping (ms)   Query Time (ms)
------------------------------------------------------
8.8.8.8            12 ms       30 ms
1.1.1.1            8 ms        15 ms
9.9.9.9            20 ms       50 ms
------------------------------------------------------
🚀 Fastest DNS: 1.1.1.1 (15 ms)
🐢 Slowest DNS: 9.9.9.9 (50 ms)

License

This project is licensed under the MIT License. See the LICENSE file for details.

Acknowledgements

The idea for this project is originally inspired by DNS-Test-Speed.

Author

Copyright (c) 2025 Max Base