In email to me, she explained:
"After quite a bit of thought and consideration, I've decided that it is time to wind down some of the AHBL's public DNSbl services - specifically the dnsbl, ircbl, and rhsbl.
We've had a good 11 year run with the lists. Times have changed -- with the deployment of IPv6 moving full speed ahead, I don't feel that the current implementation of our DNSbl services are suited to the task.
This doesn't mean that the AHBL is going away - we'll still be around, just focusing our efforts on a mix of other anti-abuse related things and a relaunch of the RHSbl (likely in 2-3 months, possibly sooner).
I look forward to continuing to work with the community, and appreciate and value the feedback I've received over the years."As a result, the lists dnsbl.ahbl.org, ircbl.ahbl.org and rhsbl.ahbl.org, and associated public look up tools are being retired.
I've known Brielle for many years and my interactions with her have been universally positive. Congratulations on a long eleven year run with AHBL, and I hope whatever she works on next is something she finds fun and fulfilling.