is an automated real time blocking list generated from attempts to email nonexistent accounts, on a few domains.

It follows these rules:

The block list can be queried via dns from, in the usual manner for an ip based blocklist.

Currently there are 272 blocks on the list.

Top ranking netblocks. was found in the net block

It appears to be announced by AS49870 (AS49870-BV, NL)

The last activity was around 2024-04-09 13:00:00-07

It is currently blocked, with a score of 96871. It will be unblocked in about 4037 days.

To check if an address is blocked, enter it here: