I updated the original post to include information about what .p2p is.
The other questions related to creating a new DAC. Currently, we cannot boot up a new DAC because we need the existing infrastructure (delegates, exchange volume, etc).
However, it might make sense to create a new DAC that is tailored to this task in the future. For example, a trusted base doesn't need 10-second transaction times – this bloats the blockchain and increases the network activity required by the client. Bitcoin's traditional 10 minute block intervals matches the existing DNS system rather well.
Again, however, if a DAC is created there will be a share drop on BTS.