DNSBL IP & Domain Blacklist Checker

Check if your company domain name or mail server IP address is listed on major email spam databases.

Blacklist Checker Workspace

Reputation Scan Parameters

Enter mail server IP address or business domain name to verify DNSBL status

Reputation Status: Unchecked
Listed Databases: 0
👤 Target Parameters
  • Target Value: -
  • Host Type: -
📂 Database Overview
  • Scanned Directories: 0
🏢 Recommendations

No target verified.

Monitor Server Reputation Health

Why deliverability managers, developers, and outreach operations audit domain blacklists

DNSBL Databases

Queries Spamhaus, Barracuda, UCEPROTECT, SORBS, and SpamCop to identify listing flags.

Multi-Type Scan

Resolves and checks both raw mail server IP addresses and public root domain records.

Detailed Errors

Displays DNS resolution timeouts and return codes to pinpoint query issues.

Follow these simple steps to verify mail server deliverability statuses

Provide IP or Domain

Enter your mail server IP address or business domain name into the reputation query box.

Run DNSBL Scan

Click "Check Blacklist" to query listings across major anti-spam databases.

Review Listing Scores

Verify total listing ratios and look up individual return logs.

Apply Recommendations

Follow delisting instructions if your IP or domain triggers blacklisted markers.

Frequently Asked Questions

Answers to common inquiries about server reputation lists

What is a DNSBL blacklist?
A DNS-based Blackhole List (DNSBL) is a spam database that lists server IP addresses or domain names known to send unsolicited bulk emails.
How does listing affect email deliverability?
Most mail receivers (like Gmail or Microsoft Outlook) check DNSBL databases. If your server is listed, your outgoing emails may be blocked or sent to spam folders.
What should I do if my server is blacklisted?
Review the listing details provided, identify the root cause of the spam trigger, resolve the issue, and visit the respective DNSBL site to submit a delisting request.