6

The simple answer is that you can’t speed up things.
Only thing you can do is ask the ones who blacklist the domain/IP is to have a look at it and request they remove it from their blacklist.

Advise :

  • Get away from that IP (and perhaps even the host).
  • Get get dedicated hosting.
  • Update the vulnerable libraries (if there are newer version without vulnerabilities), or don’t use them at all.