Introduction

The Blacklist Checker determines whether domains or IP addresses appear on spam blacklists and security threat lists. Blacklisting severely impacts email deliverability and can indicate security compromises. Regular blacklist checking helps maintain email reputation and identify potential security issues.

How To Use

- Navigate to the Blacklist Checker tool
- Enter the domain name or IP address to check
- Click Check to query multiple blacklist databases
- Wait while numerous blacklist sources are queried
- View results showing blacklist status from each source
- Green results indicate not listed
- Red results indicate blacklisted status
- Take action to request delisting if blacklisted

Key Features

- Queries multiple major blacklist databases
- Checks both domain-based and IP-based lists
- Clear status indication for each blacklist
- Common spam blacklists included
- Security threat lists checked
- Quick results from parallel queries
- No registration required

Conclusion

Blacklist status affects email delivery and website reputation. The Blacklist Checker provides comprehensive checking across major blacklist databases.