Here is the letter I recieved from DarkStar about the ventrilo server. I've already updated DNS to use the new IP as it is online and active. So if you are using the DNS it shouldn't be a problem for you.
If you currently use V22.DARKSTARLLC.COM as your Hostname, we have already updated our DNS servers to reflect this new IP address change, some of your users may connect using the old DNS if their ISP has not yet updated their cache, if this is the case please use the new IP listed below for your account until the DNS has fully propagated throughout the internet.
Your Current Hostname is: V22.DARKSTARLLC.COM
Your OLD IP Address is: 66.207.167.29
Your NEW IP Address is: 216.6.226.72
Your Port 3934 will remain the same as usual.