Spamhaus SBL
sbl.spamhaus.org
Operated by Spamhaus
Avg removal time
2–5 business days (manual review)
This blacklist severely impacts email deliverability with major ISPs and enterprise mail servers.
About Spamhaus SBL
The Spamhaus Block List (SBL) lists IP addresses belonging to verified spam sources, including known spammers, spam operations, and spam support services. It is one of the most authoritative spam blocklists in existence.
Why am I listed?
IPs are manually verified and listed when they are identified as spam sources or spam support services. This includes IP ranges of known spam operations, bulletproof hosting providers, and dedicated spam infrastructure.
How to get delisted
Follow these steps in order to request removal from Spamhaus SBL.
- 1
Look up your IP at spamhaus.org/sbl to understand the specific listing reason.
- 2
If your IP was previously used by a spam operation you acquired, document the change of ownership.
- 3
Stop all spam activity and fix the root cause.
- 4
Submit a detailed removal request through the SBL lookup page explaining the situation.
- 5
Spamhaus may contact you for additional information. Manual review is required for SBL listings.
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