DNSMap - Worldwide DNS Propagation Checker - Global test. Check the current IP of your domain name or hostname from multiple DNS nameservers and resolvers from all around the world. Instant propagation check.
America's Feedback Authority | Encoders-US. We repair, exchange and sell all types of feedback devices including encoders, resolvers, sensors and tach generators
DNS Performance - Compare the speed and uptime of enterprise and commercial DNS services | DNSPerf. Compare the speed and uptime of enterprise and commercial DNS services