In order to avoid my worker servers getting blocked, I changed the request handling in t3versions, so GET requests to remote servers can use proxy servers. When scanning for TYPO3 websites and when analyzing known TYPO3 websites for version changes, my worker servers will not use random proxy servers from a pool of private squid instances
Additionally, a list of 262 365 833 domains have been crawled and a new major version statistics has been generated.