Persisted for 4 days

Iran internet blackout has now persisted for 4 days, according to watchdog

From CNN's Soph Warnes

Iran’s internet blackout has reached 96 hours, according to cybersecurity watchdog NetBlocks.

According to NetBlocks, “fixed-line internet, mobile data and calls are disabled, while other communication means are also increasingly being targeted.”

On Thursday, network connectivity dropped down to around 1% of the usual traffic, signaling a blackout as authorities cracked down on anti-government protesters.

The countrywide communications shutdown makes it difficult to assess what is happening on the ground. Estimates from the US-based Human Rights Activists News Agency (HRANA) have put the death toll at more than 500. CNN is unable to independently verify that number.