Email Blacklist Directory
Check if your IP or domain is listed, follow step-by-step delisting guides, and set up automatic monitoring. Covers the blacklists that actually affect email deliverability.
Check All Blacklists at Once
Enter an IP address or domain to scan against every blacklist in our directory.
Run Blacklist CheckIP-Based Blacklists
These lists track IP addresses associated with spam or abuse. Being listed can cause your outbound email to be rejected or filtered.
Check if you're listed on 0spam DNSBL. Auto-delists within 24 hours, or request one free manual removal every 3 hours. Monitor your IP reputation automatically.
Check if you're listed on Abusix Mail Intelligence. Enterprise-grade combined DNSBL covering spam, exploits, and policy violations. Free tier available.
Check if you're listed on Backscatterer.org. Detects IPs sending misdirected bounce messages (backscatter NDRs). Auto-removes after 4 weeks of clean behavior.
Check if you're listed on Blocklist.de. Attack-focused DNSBL aggregating Fail2Ban reports for SSH brute force, web exploits, and mail abuse. Popular in European hosting.
Check if you're listed on DroneBL. Community-maintained DNSBL targeting compromised hosts, open proxies, and botnets. Manual removal requires remediation proof.
Check if you're listed on Invaluement DNSBL. Targets snowshoe spam and stealthy bulk senders. Free lookup tier. Used by MailRoute and enterprise filters.
Check if you're listed on Lashback UBL. Tracks IPs sending to harvested unsubscribe addresses. Auto-delists after 30 days. First manual removal free.
Check if you're listed on SpamEatingMonkey DNSBL. Spamtrap-based detection with automatic 7-day expiration. No manual removal process available.
Check if you're listed on the Truncate blocklist powered by GBUdb and Message Sniffer. Fully automated — no manual removal. Listings clear within days automatically.
Check if you're listed on UCEProtect Level 2. Lists entire /24 IP ranges — a Level 2 listing does not mean your server sent spam. Auto-delists after 7 days.
Check if you're listed on UCEProtect Level 3. Lists entire ASNs (hosting providers). A Level 3 listing does not mean your server sent spam. No legitimate provider uses this list.
Check if you're listed on Barracuda BRBL. Manual removal via the BRBL form, typically processed within 12-24 hours. Monitor your IP reputation automatically.
Check if you're listed on PSBL (Passive Spam Block List). Listings auto-expire in 2-3 weeks. Monitor your IP reputation automatically.
Check if you're listed on SpamCop. Listings auto-expire within 24 hours once spam reports stop. Monitor your IP reputation automatically.
Check if you're listed on SpamRats DYNA. Delisting requires valid forward-confirmed reverse DNS. Monitor your IP reputation automatically.
Check if you're listed on UCEProtect. Listings auto-expire in 7 days, or pay 50 EUR for instant removal. Most major providers ignore this list entirely.
Domain-Based Blacklists
These lists track domains found in email content (URLs, sender addresses). Listings here typically indicate phishing, malware hosting, or spam content.
Check if your domain is listed on SURBL. Domain-based URI blacklist used by SpamAssassin and enterprise mail filters. Monitor your domain reputation automatically.
Check if your domain is listed on URIBL. Domain-based URI blacklist used by SpamAssassin and content filters. Monitor your domain reputation automatically.