Specifically, is it possible for a website (or an app) to fingerprint me based on my custom filter lists / block lists WITHOUT first attempting to connect to specific domains and checking if these connections are possible?
For example, let's say I block twimg.com to stop nitter instances from retrieving media from X. Is there a way for another website to tell that I have blocked this domain without attempting to connect to twimg.com and checking if such connection is possible?
Thank you