Hi,

Contact the SBL team via the Lookup form at https://check.spamhaus.org/

The form says 'IP or Domain' but it will also look up ASNs so just put your ASN in. That will allow you to create a ticket with the right team and the issue should then get dealt with fairly quickly.

Regards,

  Steve Linford
  The Spamhaus Project
  

On 23 Jul 2021, at 09:08, Siyuan Miao <aveline@misaka.io> wrote:

Hi All,

One of our ASNs has been listed in the Spamhaus ASN-DROP list before it was assigned to us. 

We emailed them last year but didn't get a response. Could anyone from Spamhaus contact us off the list?

Best Regards,
Siyuan