Github project that checks a DNS entry against over 1500 DNS servers worldwide. For those times when changing the IP address of the mail server or website and you want to see how the DNS propagation in progressing.
Very useful if you haven’t been able to reduce the DNS TTL time prior to the change to reduce cache intervals. But most importantly for demonstrating to the chimpanzee from change control that the situation is out of your control.
DNSYO is a little tool I built to help me keep track of DNS propagation.
In short, it’s nslookup, if nslookup queried over 1500 servers and collated their results.