Found a total of 192,633 domains using Brotli…not bad!
select domain(pages.url) as domains, avg(pages.rank) as rank from httparchive:runs.latest_requests as req JOIN httparchive:runs.latest_pages as pages on pages.pageid = req.pageid where resp_content_encoding='br' and rank IS not NULL group by domains order by rank limit 25;
EDIT 1 -
False positive guys. Most of these domains are just loading assets from Facebook / Google which skews the numbers. Running this query gives only 357 domains serving brotli assets (which is much more believable to be honest)
select domain(req.url) as domains, count(*) as count from httparchive:runs.latest_requests as req where resp_content_encoding='br' group by domains order by count desc;