The AHBL was a list of known bad or misbehaving hosts on the Internet. It included hosts and networks that were known to originate harmful content, abuse, etc.
Public access to the DNSbl list was terminated in 2015.
The list continues on as a private invite only DNSbl and RHSbl (domain name based).
We offer maps for the rspamd spam filtering daemon by Vsevolod Stakhov.
There will be no further updates to the AHBL. While the private DNSbl/RHSbl is still in operation, the main project is complete and everyone involved has retired.
It's been a good run, and we wish everyone luck with the future.