Board Thread:General Discussion/@comment-50.150.193.10-20151211124827/@comment-1905698-20151211125555

To my knowledge only staff members and some other global trustworthy usergroups such as VSTF as well as users granted the checkuser right (which has to be granted by staff on more populated wikis) can see IP addresses of registered users. If you're logged in, you can likely trust that whoever could see your IP won't see it at any point (unless you misbehave) or leak it.

To your second question, you still can only see the IP addresses of unregistered users that make an edit.