https://twitter.com/hashtag/shiraz?lang=en
Tried to find some verification on this. Iran has shut down their internet. Either a mouse chewed on the cable, or this is a form of verification.
Could such things be visible from satellite?
The ‘internet as we know it’ is off in Iran. Here’s why this shutdown is different
https://edition.cnn.com/2019/11/19/middleeast/iran-internet-shutdown-intl/index.html