Corporate firewall stopping using jitsi meet on https://meet.jit.si/ need ips to open

Hi
We have a client using https://meet.jit.si/ if they use their unsecure wifi it works well but if they use their network cable based connection it does not.
Their IT needs to know which IP-adresses to open the relevant ports for; they’re not able to open 10000-20000 to “the entire internet” - so they want the specific IP-s to allow that range for.

Anyone know which IP-adresses meet.jit.si uses?

thanks

Anyone? :slight_smile: