Tool Spotlight
Blacklist Checker - Check if Your IP or Domain is Blacklisted
Check if your domain or IP is listed on 24+ reputable DNS-based blacklists (DNSBL/RBL). Monitor email sender reputation and identify potential deliverability issues. Use What is My IP to check your current address and verify DNS configuration for email security.
Key Features
- Check 28+ DNSBL/RBL databases
- Domain and IP blacklist check
- Real-time status monitoring
- Delisting instructions
- Reputation score analysis
Use Cases
- Email deliverability monitoring
- Sender reputation check
- Spam prevention
- Server IP reputation audit
Validate email addresses in bulk with advanced deliverability checks. Our tool verifies syntax, MX records, SMTP validity, and identifies disposable or role-based accounts. Free for up to 5 emails per validation. After validating your email lists, ensure optimal deliverability by configuring SPF records and DMARC policies. Monitor your sender reputation with our Blacklist Checker and optimize your campaigns with our Email Warmup Schedule Generator.
Blacklist Checker
Check if your domain or IP address is listed on 24 reputable DNS-based blacklists (DNSBL/RBL). Being listed can affect email deliverability and sender reputation.
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Frequently Asked Questions
What is a DNS blacklist and how does it affect email delivery?
A DNS blacklist (DNSBL) is a database of IP addresses and domains flagged for spam or malicious activity. Email servers check these lists before accepting messages. Being listed can cause emails to be rejected or marked as spam. Use our SPF Checker and DMARC Lookup tools to improve your email authentication and reduce blacklisting risk.
How do I get removed from a blacklist?
Each blacklist has its own delisting process. First, identify and fix the root cause (compromised server, spam complaint, security issue). Then visit the blacklist provider's website and follow their removal request procedure. Use IP Reputation Checker to verify your IP's security status and check DNS configuration to ensure proper email authentication.
What should I do if my IP is listed on multiple blacklists?
Multiple listings indicate a serious issue requiring immediate action. Check your server for malware, review recent email campaigns, and verify no unauthorized email sending is occurring. Use What is My IP to identify your current address, then verify authentication with our SPF Checker to prevent future listings.
How often should I check for blacklist status?
For email-heavy operations, check weekly or after any major email campaign. For regular business use, monthly checks are sufficient. Combine blacklist monitoring with IP Reputation checks and regular DNS audits to maintain optimal email deliverability and security posture.
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About & Support
About Blacklist Checker
This tool checks if your domain or IP address is listed on 24 reputable DNS-based blacklists (DNSBL/RBL) including Spamhaus, Barracuda, SpamCop, and Abusix. Being listed on blacklists can severely impact your email deliverability and sender reputation. Regular monitoring helps maintain good email health and identify potential security issues.
Tier Icons: 🔵 Critical (Tier 1) • 🟧 Important (Tier 2) • 🟩 Additional (Tier 3)
