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cbl.abuseat.org
Composite Blocking List (CBL)
The CBL (Composite Blocking List) detects and lists IP addresses exhibiting behaviors associated with spam bots, viruses, and other malicious software. It is one of the components of the Spamhaus XBL.
Tier
Major
Impact
High — Feeds into Spamhaus XBL, so a CBL listing effectively means you're also on Spamhaus.
Auto-expiry
Does not auto-expire. Self-service removal is instant but will recur if the issue isn't fixed.
What it lists
IP addresses showing signs of bot/virus infections, open proxies, or other compromised behavior.
How to get delisted
- 01Visit abuseat.org and use the IP lookup tool
- 02The lookup will show the specific reason for your listing
- 03Fix the underlying issue (malware, compromised account, misconfigured software)
- 04Use the self-service removal button — removal is typically instant
- 05If you get re-listed, the underlying issue has not been fully resolved
Open the removal formhttps://www.abuseat.org/lookup.cgi