You can use your hosts
file to redirect all traffic in a local black hole (namely 0.0.0.0)
sudo vi /etc/hosts
Add the following lines (plus hosts you find out by yourself) to /etc/hosts
and save it:
0.0.0.0 google-analytics.com
0.0.0.0 www.google-analytics.com
0.0.0.0 googletagmanager.com
0.0.0.0 www.googletagmanager.com
0.0.0.0 hn.inspectlet.com
0.0.0.0 api.segment.io
if you check the network tab in your browser, you will see something like this: