rbl.cluecentral.net v2.0


Summary: rbl.cluecentral.net moves to ascc.dnsbl.bit.nl per 1/Dec/2005.

When Sabri Berisha mailed nanog a couple of weeks ago that he would be
stopping his AS and CC DNSBL lists, I'm sure many users were somewhat
disappointed. Sabri has received a lot of feedback on the matter, but
has decided to stop hosting the lists due to lack of time and other

My employer is one of the ISPs that actively use these lists in our
antispam setup, so I have conferred with them and we came to the
decision that BIT will start hosting the list using the same
generating algorithm, but under a new domain.

I have finished prototyping and have an implementation ready for
production. I worked closely with Sabri to ensure that the data we
will publish is compatible with his. BIT will publish new data
(800MB, 8M records) on our dnsbl servers on wednesdays at around
02:00 UTC, and on our ftp/rsync server on the following day.

I am looking for a couple of US based nameservers (tinydns) to which I
can push the compressed data.cdb file (100M per week) and get query
statistics from (details to be determined), so if any of you have such
gear to share, let me know off-list and maybe we can work something


Summary: rbl.cluecentral.net moves to ascc.dnsbl.bit.nl per 1/Dec/2005.

The zonefile creation algorithm has been tested and cross referenced
with Sabri's earlier work. I have finished the distribution process
last week and let it run for the first time unattended last night. All
is well, so from now on the zone can be publically queried.

The following records are generated:
* CC.ascc.dnsbl.bit.nl and CC.v6.ascc.dnsbl.bit.nl
  o A records, for prefixes registered in country with ISO3166 code
  o TXT records to a tuple of "AS=12859 URL=http://noc.bit.nl/dnsbl/"

* ASn.ascc.dnsbl.bit.nl and ASn.v6.ascc.dnsbl.bit.nl
  o A records, for all prefixes from the given AS
  o TXT records to a tuple of "CC=NL URL=http://noc.bit.nl/dnsbl/"

* all.ascc.dnsbl.bit.nl and all.v6.ascc.dnsbl.bit.nl
  o A records 127.0.0.X, where X is a unique number per CC or 255 for unknown
  o TXT records to a tuple of "AS=12859 CC=NL URL=http://noc.bit.nl/dnsbl/"

The zonefile contains 9M prefixes and is about 1GB in filesize. Example
queries (sorry for the long line length) are:

More information on ASCC is on http://noc.bit.nl/dnsbl/ascc/

A big thankyou goes out to Mike Damm, David Coulson, Nuno Vieira and
Markus Stumpf for their support so far. I'll get back to you on the
operational details soon!