Do Browsers Keep Logs Of Pop-ups Blocked?

CCleaner for Windows
1

Never occurred to me before last night, but now I'm wondering if browsers that block pop-ups keep a list of those sites?

FE, I use IE and FireFox here, both of which are set to automatically block pop-ups. Do they log that somewhere?

If so, where? And do those lists - if they exist - ever get cleared? Pete

2
Never occurred to me before last night, but now I'm wondering if browsers that block pop-ups keep a list of those sites?

FE, I use IE and FireFox here, both of which are set to automatically block pop-ups. Do they log that somewhere?

If so, where? And do those lists - if they exist - ever get cleared? Pete

I don't think that, why should IE create a list of blocked sites?