Yes and they are all working for big money and that includes Firefox plus you have STUN servers and it's so bad that even
if the HTML in the browser uses something like

Then the browser forces the request to be sent out as HTTPS on port 443 for google.
(I needed to fake google advert tracking here)

I run code that scans and replaces all the urls in .exe's and Dlls and google is used as Constance  
all over the place and not just in pak files.

With Chrome you can write browser extensions yourself like "Add-Blocks" but the framework does not call
your J-Script functions on some of the "google call" home requests so your code cannot block them.

Microsoft with it's ETC/Host file won't block some domains when you set them to 127.0.0.1 and
has basically turned into a remote terminal for the NSA/CIA.