Chromium & Chrome Sync Server Address
I use hostsblock to block all the unwanted ‘annoyances’ online. It also blocks the Google Sync Servers for both Chromium & Chrome. The fix is fairly simple if you know the sync server address, just check the source code.
# hostsblock-urlcheck https://clients4.google.com/
Yes I’m trying to move away from Google Services, yet I’m using Chromium with sync services.