All .onion website URLs are now shifted towards the Onion v3 protocol. That means many of the existing Dark Web Websites will no longer be accessible unless you know the new v3 .onion address.
There are various reasons for the change, including better code and improved security.
To see if the URL you’re trying to access is v2 or v3, the most telling sign is the length of the URL. v3 .onion addresses are 56 characters in length. The older v2 URLs are only 16 characters in length.
Getting to know new v3 .Onion URLs is very important as Tor client updates in October 2021 will render all v2 addresses obsolete.
