Hello,
We have received reports of difficulty reaching one of thousands of domains we host on 23.185.0.3. Information contained in these forums suggests this may result from content on a different customer's site. Would it be possible to give consideration to the fact that the vast majority of sites on this IP address are not malicious and remove this generic block? We work diligently to detect and neutralize malicious threats as quickly as they are identified. Our experience has been there is often a significant lag between the time an issue is addressed and when it is removed from databases. We would be happy to address any malicious activity you detect on the 23.185.0.0/24 network. Please forward reports of abuse to the Abuse Contact registered here: https://search.arin.net/rdap/?query=23.185.0.0.
Thank you,
Clinton Bowen
Security Engineer at Pantheon.io
A related post from my manager is found here: