I’m kind of amazed that you can still do massive scans like this and not face some bad consequences like getting blocked somewhere, or having your hosting provider get very annoyed at you.
Your host isn't likely to care unless it causes them grief. There are so many scans happening at any given moment I doubt any of the targets will notice yours.
I do vaguely remember one of these, "I scanned the whole internet! It's easy!" stories from years ago where the author wound up receiving an email from someone at Electric Boat who told them, "Please don't portscan us. We're required to call the FBI when it happens." Your host would probably be "very annoyed" if they received one of those, but I doubt anyone cares enough to send such a message nowadays.
I don't know if the tool is called Massscan (I thought there is a tool called something with rabbit) but I followed a security blog a few years back and since then I had the impression that scanning all ipv4s is basically a solved issue.
I do vaguely remember one of these, "I scanned the whole internet! It's easy!" stories from years ago where the author wound up receiving an email from someone at Electric Boat who told them, "Please don't portscan us. We're required to call the FBI when it happens." Your host would probably be "very annoyed" if they received one of those, but I doubt anyone cares enough to send such a message nowadays.