How many links from one PBN?

[mediadrug]

There is no number of generating the backlinks from PBN sites but yes, you should take care of the DA and spam score of the website.

There is no limit so that doesn't mean OP should build links any number he or she likes. A number greater than one is highly unsafe.

And coming to your statement checking spam score is a wise thing. But checking DA is not wise its just stupid. Its a third party metrics and also not to mention its highly inaccurate in a number of ways. So, stay away from these toy metrics.