The block message is 521 DNSRBL: Blocked for abuse

Andrew D Kirch trelane at
Wed Sep 18 22:46:40 UTC 2013

On 9/18/2013 6:41 PM, Timothy Metzinger wrote:
> Here's a thought.  Would it be possible to set up a process where ARIN, as
> part of reselling IP addresses, either issues a certificate of transfer that
> the new owner can use to prove to the ISPs that he's a new owner and not the
> old evil spammer, or ARIN publishes a list of IP assignments that can be
> used by ISPs to provisionally remove them from blocked lists?
> I sympathize with the original poster, it's sort of like buying a used car,
> only to find out the previous owner was the drunk driver who ran over your
> next door neighbor's dog.
I used to run the AHBL and ARIN used to contact us when they recycled IP 
space.  We always removed when contacted by ARIN.


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