bl.ofdoom.com

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

It follows these rules:

• Each attempt to email a nonexistent address adds one point to the /24 net block containing the offending IP address.
• When the score for a net block is greater than 15, that /24 block gets added to the block list.
• When the score for a net block has not increased for 8 hours, one point is taken away every hour.
• When the score drops below 15, the /24 block is removed from the block list.

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

Currently there are 122 blocks on the list.

185.0.0.0/8 matches the net block 185.30.32.0/24

It appears to be announced by AS48324 (DE-WEBGO - webgo GmbH, DE)

The last activity was around 2026-09-30 06:00:00-07

It is currently blocked, with a score of 73. It will be unblocked in about 4 days.

185.0.0.0/8 matches the net block 185.91.118.0/24

It appears to be announced by AS200918 (ORELSOFT - Pavel Zizka, CZ)

The last activity was around 2026-10-22 18:00:00-07

It is Not currently blocked, but has a score of 1. It should be deleted from the database in about 1 days.

185.0.0.0/8 matches the net block 185.93.89.0/24

It appears to be announced by AS213790 (LimitedNetwork-AS - Limited Network LTD, GB)

The last activity was around 2026-09-27 19:00:00-07

It is currently blocked, with a score of 26325. It will be unblocked in about 1097 days.

185.0.0.0/8 matches the net block 185.136.15.0/24

It appears to be announced by AS210328 (ALMAZ - AO ALMAZ, RU)

The last activity was around 2026-10-22 20:00:00-07

It is currently blocked, with a score of 26. It will be unblocked in about 2 days.

185.0.0.0/8 matches the net block 185.147.124.0/24

It appears to be announced by AS213861 (Vostrik-AS - Vostrikov Rodion, RU)

The last activity was around 2025-01-17 21:00:00-08

It is currently blocked, with a score of 115175. It will be unblocked in about 4799 days.

185.0.0.0/8 matches the net block 185.156.73.0/24

It appears to be announced by AS209641 (I-SERVERS-EAST - IHOR HOSTING LTD, GB)

The last activity was around 2026-06-08 15:00:00-07

It is currently blocked, with a score of 40570. It will be unblocked in about 1691 days.

185.0.0.0/8 matches the net block 185.224.128.0/24

It appears to be announced by AS49870 (AS49870-BV - Alsycon B.V., NL)

The last activity was around 2024-08-13 20:00:00-07

It is currently blocked, with a score of 76526. It will be unblocked in about 3189 days.

185.0.0.0/8 matches the net block 185.242.3.0/24

It appears to be announced by AS401626 (NETIFACE-TORONTO - Netiface America, Inc., US)

The last activity was around 2026-07-23 07:00:00-07

It is currently blocked, with a score of 3295. It will be unblocked in about 138 days.

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