Such uncalled for scanning usually gets your connection cut. I suggest you not do this.
I have to perform a UK based Websites port scan to find their common vulnerabilities. I need to scan at least 15000-20000 websites, but I can't find any URL database, or even a simple file with thousands of URLs saved on it. Maybe anyone knows where to find it? I need a list of at least 15000 Website URLs. Thanks in advance.