You can order Ancyast Dns at the link below :
https://my.blazingfast.io/cart/dns/
After that click on "I will update the nameservers on my existing domain" and enter your domain name (example "qwe123.com") and click "Continue:"
In the next step click "Continue".
Final step - click on "Checkout" :
Congratulations, you can now add DNS records to any domain you want.