Spam Database Checker
Check if an IP address or domain is listed in common spam blacklists (Spamhaus, Barracuda, SURBL, URIBL) using DNS-based lookups.
Examples
Spam Blacklist Checker
Checks IPs and domains against Spamhaus, Barracuda, SURBL, and URIBL using real DNS-based DNSBL lookups.
What This Tool Checks
- Spamhaus ZEN: Checks the IP against Spamhaus ZEN DNSBL via DNS lookup
- Barracuda RBL: Checks the IP against Barracuda Reputation Block List via DNS lookup
- SURBL: Checks the domain against SURBL multi-list via DNS lookup
- URIBL: Checks the domain against URIBL multi-list via DNS lookup
- Risk Score: Calculates a risk score based on how many lists the target appears in
How it works
Each blacklist check is a real DNS query: the same method mail servers use to verify sender reputation. Results reflect the current state of each blacklist at the time of the query.