Your Domain Bot - Telegram bot for domain monitoring
DNSChecker.org - Check DNS Propagation worldwide. DNS Checker provides name server propagation check instantly. Changed nameservers so do a DNS lookup and check if DNS and nameservers have propagated.
SSL Alerts - Free service to send SSL certificate expiration alerts
Whats My DNS - Instantly check your domain names current IP address and DNS record information against multiple name servers located in different parts of the world.
DNSPerf - Free DNS performance analytics
NsLookup.io - A simple and powerful tool for querying DNS records