Throttling of internet traffic in Russia, affecting Cloudflare users, has been reported since June 9, 2025, with ISPs such as Rostelecom and Megafon implementing throttling mechanisms including packet injection and blocking. The throttling limits the amount of content served to 16 KB, rendering many websites barely usable. This action is consistent with Russia's efforts to isolate its internet within its borders and reduce reliance on Western technology. Cloudflare has not received formal communication from Russian government entities about the motivation for this action, but external reports corroborate their analysis. The impact is seen across connections initiated from inside Russia, even when reaching Cloudflare servers outside of Russia, with some service providers also affected by throttling or other disruptive actions.