🛡 IP Blacklist Check (DNSBL)
Enter an IP address to check if it's listed in DNSBL spam blacklists like Spamhaus, Barracuda, UCEPROTECT and more.
What is a DNSBL?
DNSBL (DNS-based Blackhole List) is a system that tracks IP addresses involved in spam or suspicious activity. Email servers and ISPs use these blacklists to filter harmful traffic.
- 🔍 Real-time lookup across multiple blacklists
- 🌍 Checks popular DNSBLs: Spamhaus, SORBS, UCEProtect
- 🧠 Helps detect and resolve email delivery issues
If your IP is listed, it can negatively affect your email deliverability and sender reputation. We recommend contacting the respective blacklist services for delisting procedures.