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The Blacklist Lookup Tool from seochecker.tools helps you determine whether your domain or IP address is listed in major spam and DNS blacklists. Being blacklisted can negatively impact your email deliverability, SEO, and site credibility.
This tool checks across multiple public spam databases (DNSBLs), including Spamhaus, SURBL, SORBS, and others, to verify if your website or mail server is flagged.
If your domain or IP is blacklisted:
Emails may land in spam folders or be blocked entirely
Search engines may downgrade trust signals
Shared hosting accounts may suffer from bad neighbor effects
The Blacklist Lookup Tool gives you early warnings so you can take immediate action before it affects your communication or rankings.
Instantly check your domain or IP against major blacklists
Supports real-time DNSBL status scanning
No login required — completely free
Simple and clean interface
Mobile-optimized and secure
Use it regularly to keep your server and website off the radar of spam monitoring systems.
Q1. What does being blacklisted mean?
Your domain or IP is flagged by spam or security databases for suspicious or malicious behavior, which may be caused by malware, spam emails, or shared server misuse.
Q2. What are DNSBLs?
DNS-based Blackhole Lists (DNSBLs) are databases that monitor IP addresses and domains for spam or malware activity.
Q3. What should I do if I'm blacklisted?
Investigate the cause, secure your server, remove malicious content, and request delisting from the blacklist providers.
Q4. Can being blacklisted affect SEO?
While search engines focus on content and authority, being listed in security databases may impact user trust and server response quality.
Q5. Is this tool free?
Yes, seochecker.tools provides this tool free of charge with unlimited use.
Monitor your domain health regularly
Prevent email delivery issues
Maintain clean hosting and server IPs
Protect business reputation and SEO trust
Analyze blacklists before buying old domains or IPs
