There is nothing in the protocol that includes anything about IPs.

However, the relayer that you connect may be recording your IP, because that is how the internet works. You can either run your own relayer and have it connect to other relayers, or write an IP proxy in a server that you own.

The protocol is pretty wide open, it lets you subscribe to a prefix of a public key, instead of the whole private key. It depends on the client that you are using.

I am writing a tool that will create static pages from the public keys that you want, it will let people to subscribe to people through traditional methods like RSS, HTML or even maybe through a mastodon client. I hope to finish it this month and to make it open source. This tool will let you run your client and subscribe to any account that you want, and it will generate a simple web page that you can access from anywhere.