[ REAL-TIME DNSBL IP REPUTATION ENGINE ]
Is My IP Blacklisted? Check 30+ DNSBL Blocklists Instantly
Real-time asynchronous DNS queries across Spamhaus ZEN, Barracuda BRBL, SORBS, SpamCop, and 30+ global zones.
> Live Parallel DNSBL Lookups
Performs direct non-cached reverse DNS queries against authoritative Spamhaus, Barracuda, and UCEProtect root zones.
> Spam, Botnet & Tor Exit Flags
Identifies if your residential or server IP was tagged in dictionary attacks, malware relays, or anonymous proxy exits.
> Actionable Delisting Guides
Includes direct links and instructions for requesting immediate IP removal from major blocklist operators.
> ACTIVE DNSBL REPUTATION ZONES QUERY MATRIX (12 ROOT ZONES)
| ZONE HOST | ORGANIZATION / CATALOG | STATUS |
|---|---|---|
zen.spamhaus.org |
Spamhaus ZEN (SBL+XBL+PBL) | ● ONLINE (UDP 53) |
b.barracudacentral.org |
Barracuda Reputation Network (BRBL) | ● ONLINE (UDP 53) |
bl.spamcop.net |
SpamCop Blocking List (SCBL) | ● ONLINE (UDP 53) |
dnsbl.sorbs.net |
SORBS Aggregate DNSBL | ● ONLINE (UDP 53) |
cbl.abuseat.org |
Composite Blocking List (CBL) | ● ONLINE (UDP 53) |
psbl.surriel.com |
Passive Spam Block List (PSBL) | ● ONLINE (UDP 53) |
ubl.unsubscore.com |
LashBack Unsubscribe Blacklist (UBL) | ● ONLINE (UDP 53) |
dnsbl-1.uceprotect.net |
UCEPROTECT Level 1 | ● ONLINE (UDP 53) |
ix.dnsbl.manitu.net |
NiX Spam DNSBL | ● ONLINE (UDP 53) |
tor.dan.me.uk |
Dan.me.uk Tor Network Exit Gateway | ● ONLINE (UDP 53) |
bl.blocklist.de |
Blocklist.de Fail2Ban Reports | ● ONLINE (UDP 53) |
truncate.gbudb.net |
GBUdb Real-Time Network Flag | ● ONLINE (UDP 53) |
> FREQUENTLY ASKED TECHNICAL QUESTIONS
Q: Why is my IP address on a blacklist?
Common causes include sending high-volume unauthenticated mail, botnet malware infections on your local network, or inheriting a recycled dynamic IP previously abused.
Q: How long does an IP blacklist lookup take?
Our engine queries 12+ authoritative DNSBL zones in parallel via native UDP/DNS resolvers in under 200ms.
Q: How can I remove my IP from Spamhaus or Barracuda?
Once confirmed, visit our remediation guide to submit an automated delisting request directly to the zone maintainers.
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