> after Googled a lot, I can't find any services or tools can do this.
... for free. There are tons of companies offering this service, but you gotta pony up some dough. Also this sounds like you're trying to set up a service that bothers people with those emails like "You've just registered extension .com, but extension .xyz is also available" and I hate that. Can you justify your needs for this?
Have to say you have provided an interesting idea of making some money, but it also has high potential to lose money since you have to register a ton of domains and its too much hustles, I don't want to flirt with that thing.
I want to monitor some article niche patterns of those newly built websites, I promise its for pure white hat and legal reasons, so don't worry about that. Could you point me the services can do this? I can't find any...
"I promise its for pure white hat and legal reasons"
if it's for pure white hat reasons, then you shouldn't be afraid to tell us those reasons.. what are they? Perhaps there are alternative ways of solving that problem.
"then you shouldn't be afraid to tell us those reasons"
Hey man, I don't agree with your this point though.
Its not always no-harm to tell others what is your niche or ideas. If you know Internet marketing, especially making kinds of websites, you should know its better to never disclose your ideas or even what is your website. It sounds ridiculous for some, but its very normal practice.
On large IM forums, people never reveal their own sites.
... for free. There are tons of companies offering this service, but you gotta pony up some dough. Also this sounds like you're trying to set up a service that bothers people with those emails like "You've just registered extension .com, but extension .xyz is also available" and I hate that. Can you justify your needs for this?