Ok I noticed after trying may footprints to find the 404 expired tumblr accounts non of the work. With that said however I am able to scrape many tumblr accts and some with really good metrics and backlinks. The problem is what do you use to check if they are expired urls? Using scrapebox to check them is a major fail. The alive checker, vanity checker and the page scanner dont work. I created my own checker using ubot but it crashes or throws errors after X amount of checked accounts. What is everyone using now to find if the tumblr account is expired or not?