How to check domain binding to cloudflare api?

Question

cloudflare

I have a domain, I bind it via api.
Next, I need to check the activation of the domain (more precisely, the binding to ns Cloudflare a)
I used this
https://api.cloudflare.com/#zone-zone-activation-check
before, but it returns True in each case . I
also checked ns through dnspython and there is no ns cloudflare, although the domain, as shown by cloudflare, is tied