Ever wondered whether users would get to your website in an IPv6-only world? Well, now you can find out. Our IPv6 Health Check tool checks not only that your web and mail servers are accessible via IPv6 addresses, but also that you can obtain those addresses from DNS using IPv6.

You can try it out by entering a domain name below:

Domain:



Should you care? Well, typing domains for a few well-known websites into the checker reveals that the IPv6 Internet isn’t currently a very exciting place, so it’s going to be a little while before not having an IPv6 presence becomes a problem. On the other hand, there’s a growing number of users with both IPv4 and IPv6 connectivity, with the latter being preferred. Google recently announced that over 2% of their traffic was now over IPv61, so if you’re going to list IPv6 addresses for your servers then it’s important that they work.

1. Although you still need an IPv4 connection to find Google in the first place.