— On August 4, 2019, Netblocks published on it's Twitter a update about Moscow Protests:

Netblocks:
— "#Confirmed: Technical data provide evidence of Internet shutdown targeting #Moscow demonstrators on 3 August 2019; real-time network measurements indicate disruption to wifi networks from 12:00 p.m. UTC in addition to mobile data cuts"

https://netblocks.org/reports/evidence-of-internet-disruptions-in-russia-during-moscow-opposition-protests-XADErzBg