[November 27, 2019 – UPDATE]
The nsZone RBLs have now been removed from our system:
https://hetrixtools.com/forum#/discussion/156/nszone-down-removed
[February 22, 2016]
SpamHaus warns its users of these RBLs as being fake, stealing their data and charging users for delistings.
You can read the full article here, on the SpamHaus website: https://www.spamhaus.org/organization/statement/8/
Although we cannot confirm if this is true or false, for the time being we are still keeping these 3 RBLs among the blacklists that our system checks IPs on, with a warning for our users leading to this announcement.
More info on this RBL can be found in our documentation:
https://docs.hetrixtools.com/nszones-com/
It will be up to you to decide whether to ignore this RBL or take its data seriously.
Here’s how you can ignore any RBLs:
http://docs.hetrixtools.com/ignore-a-blacklist/