Can it be the case that my hostinger is blocking my php curl_ to certain API?

I was testing how much load the website can take so I curled 150 times simultaneously in my hostinger php file, and suddenly after that I cannot curl to that specific API anymore…

everything else works ffine but that API would not work… I tried to access the API from my web-brouser and virtual server and the request works ffine so it’s something to do with my hostinger server…

I asked the API if they have any block on IPs and they said they don’t…

Can this be the case where hostinger is blocking my access to the API?

Do you have a hostinger or 000webhost account to start?