DNSBLs other than Spamhaus...

[johnl at iecc.com (John Levine)]

>>> To the best of my knowledge, MAPS was the first to do it.  Uribl.com
>>> currently does it (and does the sort of query aggregation across your
>>> entire? network) that I mentioned.
>>
>> Can you access MAPS without a subscription at all?

No.  A low level subscription is pretty cheap, and I used to have one,
paying $140/yr for under 1000 users, but I dropped it when I found
that MAPS wasn't providing anything I couldn't get elsewhere.

R's,
John