The consensus client teams are all running consensus bootnodes for discv5, you can find the list of ENRs here: lighthouse/boot_enr.yaml at a53830fd60a119bf3f659b253360af8027128e83 · sigp/lighthouse · GitHub
You can extract the IPs using enr-cli read <enr-string>.
The Lighthouse (Sigma Prime) bootnodes are currently hosted on Linode in Australia, so we’re contributing a little bit of hosting + geographic diversity. I imagine hosting on bare metal servers operated entirely by our team would be infeasible, but we could think about it. Running an execution bootnode may also be an option for us, if that would be deemed useful.