Hi, On 3/25/21 8:28 PM, Randy Bush wrote:
I think you will find that most SMTP / anti-spam focused RBL tools give a very similar result for IP reputation on a per /24 block basis
got cites? this got me curious the other day.
randy Randy, I can share our data with you if you want to do an analysis of
Since I started working as an IPv4 Broker I've done tens of thousands of scans (for blocks of IPs) in hundreds of blocklists. There are a handful of blocklists that will list the whole block (that may be a /24 or even a /16) - Spamhaus is an example. However, most blocklists will list only the IPs that have actually done spam. Barracuda, spamrats, etc. the data, I may find a way to give you access to our historic blocklist checks database. We can discuss in private.
--- randy@psg.com `gpg --locate-external-keys --auto-key-locate wkd randy@psg.com` signatures are back, thanks to dmarc header butchery
cheers, elvis