What is a Blacklist Checker?

A Blacklist Checker is a tool that checks if your IP address or domain is listed on various email blacklists (DNSBL/RBL). These blacklists are used by email providers to identify and block potential spam sources.

Why should I check if my IP/domain is blacklisted?

Being blacklisted can severely impact your email deliverability. Regular checks help ensure your emails reach their intended recipients and maintain your sender reputation.

How often should I check my IP/domain?

It's recommended to check your IP/domain at least once a week. If you're a high-volume email sender, you might want to check more frequently, such as daily or every few days.

What should I do if I'm blacklisted?

If you find your IP/domain is blacklisted: 1) Identify the reason for listing, 2) Fix any issues that caused the listing, 3) Submit a delisting request to the blacklist operator, 4) Implement best practices to prevent future listings.

Can I check multiple IPs or domains at once?

Yes, our tool supports bulk checking. Simply switch to 'Bulk Check' mode and enter multiple IPs or domains, one per line, to check them all simultaneously.

Blacklist Checker

Blacklist Checker tool to verify if your IP or domain is listed in popular DNS blacklists (DNSBL/RBL)

Free Blacklist Checker Tool

Our Email Blacklist Checker is a powerful tool designed to help you monitor and maintain your email server's reputation. Check if your IP address or domain is listed in any of the major DNS blacklists (DNSBL/RBL) that email providers use to filter spam.

Real-Time Checking

Get instant results from multiple blacklist databases, with detailed status information and response times.

Bulk Checking

Save time by checking multiple IPs or domains simultaneously with our efficient bulk checking feature.

Proactive Monitoring

Regular checks help prevent email delivery issues before they impact your business communications.

Detailed Reports

Get comprehensive reports including listing status, response times, and direct links to delist requests when available.

Why Check Your IP/Domain?

Being listed on email blacklists can severely impact your email deliverability. Emails from blacklisted IPs or domains often end up in spam folders or get blocked entirely. Regular monitoring helps ensure your emails reach their intended recipients and maintains your sender reputation.

How to Use

Enter a single IP address or domain name in the input field
Switch to "Bulk Check" mode for checking multiple entries
Click "Check" to start the verification process
Review the detailed results and take action if needed