With the help of this app you can check if your DNS A Records are pointing where they should. You changed your nameserver settings from IP A to IP B and you need to check if the records are pointing accordingly thanks to this you can see this change real-time. Simply start the query BEFORE changing records then CHANGE them and you will see that gradually the DNS will be pointing to the new record.

The efficiency has been greatly improved compared to this app's initial release.

Just enter the host you would like to check and sit back while the app is querying your domain against a DB of over 1000 fast DNS servers.

The DNS servers database is not hardcoded and is updated every once in a while.

Knowledge is power!