◉ Security Tool
IP Blacklist Checker
Check any IP address against 6 major spam and abuse blacklists — Spamhaus, SpamCop, SORBS, Barracuda, UCEProtect, and AbuseCBL.
Blacklists Checked
Spamhaus ZEN
HighIndustry standard. Combines SBL, XBL, and PBL. Used by most major email providers.
SpamCop
HighUser-reported spam database. IPs that send reported spam are listed automatically.
SORBS
MediumSpam and Open Relay Blocking System. Covers spam, proxies, and dynamic IP ranges.
Barracuda
MediumUsed by Barracuda email security appliances deployed in many businesses.
UCEProtect L1
MediumLists individual IPs with abuse history. Highly automated, broad coverage.
AbuseCBL
HighComposite Blocking List — detects IPs exhibiting botnet and malware behavior.