DynDNS is major DNS provider. Because of Distributed Denial of Service against DynDNS attack, a lot of websites are down.

These websites include Twitter, Spotify, SoudCloud, AirBNB, Newyorktime, Netflix, Reddit, Amazon, GitHub, and a lot of other websites.

However, no one knows who is behind this attack.

As per report, Dyn service has now been restored and all websites are working as per routine.