Please look at the phex sourcecode. You might find some there:
SourceForge.net Repository - [phex] Contents of /phex/trunk/src/main/resources/phex/resources/phex.hosts
If that doesn’t work, run a Phex, wait some time (1-2h), stop it and then use the phex.hosts in its config folder (on *nix-Systems it’s ~/.phex). That should give you working IPs.