Hello,
We all have different softwares to manage DNS (Efficient IP, Infoblox, Solarwinds, Netbox...) but we all share the same issues : when it comes to change DNS entries (A Record, IP...) it might have a non-negligeable impact and sometimes we cannot // don't want to just lower the TTL of all impacted entries to 5 min. Finally, we all know that a DNS entry might take up to 24h to be updated everywhere in the world, whatever you do.
So when you have to do a big change, you might want to relay to the following - very handy - websites :
1) Check the status
Check live and globally what is the entry data. It has the advantage of checking all around the globe.
2) Flush some cache
If you notice that the entry does not update everywhere, you might want to force flush some major relay. In order to do this, use those websites :
Check + flush opendns
Flux google cache
3) Troubleshoot and understand all the layers of the DNS request until your server
There it is, I hope it will help you with your future changes !
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