3rd Party Proxy endpoint
For specified domains and file types (fonts, javascript, stylesheets), Accelerated Domains can either proxy and cache those things, or just proxy those items.
[domain]/acd-cgi/3pp/
Scripts Domains that are Proxied
'/www.google-analytics.com/analytics.js',
'/www.googletagmanager.com/gtag/js',
'/www.googletagmanager.com/gtm.js', // is not cached, only proxied
'/www.googletagservices.com/tag/js/gpt.js',
'/apis.google.com/js/',
'/ajax.aspnetcdn.com/',
'/ajax.cloudflare.com/',
'/ajax.googleapis.com/',
'/cdn.jsdelivr.net/',
'/cdnjs.com/',
'/cdnjs.cloudflare.com/',
'/code.jquery.com/',
'/maxcdn.bootstrapcdn.com/',
'/netdna.bootstrapcdn.com/',
'/stackpath.bootstrapcdn.com/',
'/use.fontawesome.com/',
'/netdna.bootstrapcdn.com/',
'/stats.wp.com/',
'/a.optmnstr.com/app/js/',
'/assets.pinterest.com/js/',
'/bat.bing.com/',
'/cdn.onesignal.com/sdks/',
'/cdn.optimizely.com/',
'/cdn.polyfill.io/',
'/cdn.shopify.com/s/',
'/css3-mediaqueries-js.googlecode.com/svn/',
'/d2wy8f7a9ursnm.cloudfront.net/',
'/html5shim.googlecode.com/svn/',
'/html5shiv.googlecode.com/svn/',
'/maps.google.com/maps/api/js',
'/maps.googleapis.com/maps/api/js',
'/pagead2.googlesyndication.com/pagead/js/',
'/platform.linkedin.com/',
'/platform.twitter.com/widgets.js',
'/platform-api.sharethis.com/js/',
'/s7.addthis.com/js/',
'/ws.sharethis.com/button/',
'/snap.licdn.com/',
'/connect.livechatinc.com/',
'/z-na.amazon-adsystem.com/widgets/onejs',
'/cdn.intergient.com/pageos'
Stylesheet domain that are proxied
'/fonts.googleapis.com/',
'/ajax.aspnetcdn.com/',
'/ajax.cloudflare.com/',
'/ajax.googleapis.com/',
'/cdn.jsdelivr.net/',
'/cdn-images.mailchimp.com/embedcode/',
'/cdnjs.com/',
'/cdnjs.cloudflare.com/',
'/code.jquery.com/',
'/maxcdn.bootstrapcdn.com/',
'/netdna.bootstrapcdn.com/',
'/stackpath.bootstrapcdn.com/',
'/use.fontawesome.com/'
Regex CDN Domains that are proxied
'cdn\\.shopify\\.com',
'cdn[\\d]*\\.bigcommerce\\.com',
'[ics][\\d]+\\.wp\\.com',
'static[\\d]*\\.squarespace\\.com'