Our servers' permanent names are mirkwood (160.90) and shire (180.66). I am migrating our services from mirkwood to shire at the moment, pending mirkwood's permanent shutdown. While www, ts1, and so on, will gradually transition from pointing to mirkwood to pointing to shire, mirkwood and shire will not themselves change, so attempting to connect to mirkwood for any reason after next week will fail (you'll need to use shire instead).
If you never connect to mirkwood directly, you don't have to worry about it. All of the service subdomains will change automatically. You can see the progress by pinging each (for instance, if you pinged
www.swordofkahless.com earlier today, you would have received an answer from mirkwood.swordofkahless.com...if you do it now, you should receive an answer from shire.swordofkahless.com).