whatsmydns.net - DNS Propagation Checker
  1. What's My DNS?
  2. Development Blog
  3. What's My DNS Launched

What's My DNS Launched

7th June 2008

What's my DNS was launched a few days ago in a public beta state, there is bound to be a few bugs here and there so don't worry too much if your DNS checks aren't totally as you expect.

So first of all, what is What's My DNS? Well quite simply, it is an online utility that allows you to instantly check the current DNS propagation of a domain name on a range of randomly selected name servers located in different locations around the world.

Now why would anybody find this useful? The people who will benefit the most from this service is basically anybody who has anything to do with web hosting, email hosting, or just web development in general. The way that the Internet and the Domain Name System works means that there is a delay for changes to take effect from the time that they are comitted to the time that all end users around the world will see them. This propagation can take up to 72 hours in some cases.

What's My DNS allows you to monitor this delay as it propagates around the Internet and around the world so you no longer need to wonder if changes you've made to your DNS zones are visible elsewhere.

There is also a section called What's My IP Address which is a simple utility that simply shows your IP address as many people find this useful.

If anybody has any feedback, bug reports, or ideas that would make the utility better then then make sure you let me know and I will try my best to implement them. I have a bunch of my own ideas too so expect to see some new features in the near future.