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IP / Domain Blacklist Check
Check an IP or domain against 12 major DNS spam blacklists (DNSBL) — see who has it listed.
We query 12 DNSBL zones for this address.
Next step: IP Address Lookup →
About the Blacklist Check
This checks whether an IP or domain is listed on major DNS blacklists (DNSBLs) that mail servers use to filter spam. If you're listed, your email may be silently rejected.
What this tool checks
- Queries 12 well-known spam blacklists
- Flags which lists have the address
- Works for an IPv4 or a domain's A record
Frequently asked questions
I'm listed — what now?
Fix the underlying issue (open relay, compromised host, bad sending practice), then request delisting on each blacklist's website.
Does one listing block all my mail?
Not always — different providers trust different lists, but even one major listing (e.g. Spamhaus) can hurt deliverability badly.
Monitor uptime & domains for real
Bulk domain + WHOIS checks and live site monitoring inside the panel.