diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -313,6 +313,7 @@ DevOps is the combination of cultural philosophies, practices, and tools that in
 - [Zabbix](https://www.zabbix.com/) - Mature and effortless monitoring solution for network monitoring and application monitoring.
 - [Glances](https://github.com/nicolargo/glances) - Monitoring information through a curses or Web based interface.
 - [Healthchecks](https://github.com/healthchecks/healthchecks) - Cron monitoring tool.
+- [DNS Propagation Checker](https://github.com/brancogao/dns-propagation-checker) - Global DNS propagation checker with real-time results. ([Demo](https://dns-propagation.autocompany.workers.dev))
 - [Bolo](http://bolo.niftylogic.com/) - Building distributed, scalable monitoring systems.
 - [cAdvisor](https://github.com/google/cadvisor) - Analyzes resource usage and performance characteristics of running containers.
 - [ElastiFlow](https://github.com/robcowart/elastiflow) - Network flow monitoring (Netflow, sFlow and IPFIX) with the Elastic Stack.