From Wednesday January 26th ns4.webfaction.com will point
to 184.108.40.206 (instead of 220.127.116.11 currently).
If you own any domains and use our DNS servers then you may have given the previous IP address to your domain registrar. If that is the case then we recommend that you update the IP address in your registrar’s control panel as soon as possible (you don’t have to wait until Wednesday). Since we are changing the IP address of just one of our 4 DNS server there is no danger of your website or emails being inaccessible while you make the change.
Some registrars only ask for the DNS servers names not their IP addresses. IF that’s the case with your registrar then you don’t need to do anything.
You can find more information about our DNS servers here: http://docs.webfaction.com/user-guide/domains.html#pointing-your-domain-to-webfaction-s-servers
Update: ns4.webfaction.com now points to 18.104.22.168