Blacklist Check

Blacklist Check Tool - Verify IP, Domain, and Email Reputation Instantly

Our Blacklist Check Tool helps you instantly verify whether your domain, IP address, or email server appears on any DNS-based blacklists (DNSBLs). Being blacklisted can harm your email deliverability, online reputation, and website trustworthiness.

Run a quick scan across multiple real-time blacklist databases to ensure your domain or IP remains clean and credible.

What Is a Blacklist (DNSBL or RBL)?

A blacklist (also known as a DNS-based Blackhole List, DNSBL, or Realtime Blackhole List, RBL) is a database that tracks IP addresses, domains, or email servers identified for sending spam, malware, or suspicious activity.
When your IP or domain is listed, your emails may be rejected, or your website might lose credibility among ISPs, email providers, and users.

Common DNS-based blacklists include:

• Spamhaus
• SORBS
• SpamCop
• Barracuda Central
• UCEPROTECT

These blacklists are maintained by global organizations to help reduce spam and fraudulent activity on the internet.

How the Blacklist Check Tool Works

Our tool performs an extensive scan of major DNSBL databases to check whether your IP or domain has been reported for suspicious activity.

How to use it:

1. Enter your domain or IP address (e.g., example.com or 192.168.1.1).
2. Click “Check Blacklist.”
3. The tool queries multiple DNSBL databases in real time.
4. You’ll see whether your domain/IP is listed or clean, along with direct links for delisting or more information.

This helps you quickly identify issues affecting your email delivery or network reputation.

Types of Blacklist Checks

1. IP Blacklist Check

Check whether your server’s IP address is blacklisted across global spam databases.
If your mail server IP appears on a blacklist, your outgoing emails might be blocked or marked as spam. Regular IP checks help maintain a clean sender reputation and improve deliverability.

2. Domain Blacklist Check

Ensure your domain name isn’t flagged for suspicious or malicious activities.
Domains can get blacklisted due to compromised hosting, spammy backlinks, or phishing attempts.
Use this tool to verify your domain’s standing and avoid website reputation loss.

3. Email Blacklist Check

Verify whether your email address or mail server is listed on any spam-blocking databases.

Email blacklists can cause deliverability issues where legitimate messages end up in spam or junk folders.

Use this check to keep your email marketing and communication trustworthy and effective.

Why Your IP or Domain Might Be Blacklisted

Getting blacklisted can happen for several reasons, often unknowingly:

• Sending spam or unsolicited bulk emails.
• Poor email list hygiene (invalid or purchased lists).
• Compromised email accounts or servers.
• Shared hosting with spammy neighbors.
• Malware infections or open relays.
• Misconfigured mail servers without SPF/DKIM/DMARC.
• Past activity from a previously assigned IP.

Regular monitoring helps you catch these issues early and protect your reputation.

Understanding Blacklist Check Results

If you’re listed, you’ll find direct delisting links for quick resolution.

How to Remove Your Domain or IP from a Blacklist

If your IP or domain is blacklisted, follow these steps to restore your online reputation:

1. Identify the blacklist where you’re listed using our tool results.
2. Visit the delisting link provided for that specific database.
3. Follow the removal instructions: some may require verification or a request form.
4. Clean your system: scan for malware, check mail configuration, and secure your accounts.
5. Wait for review: delisting may take hours to a few days, depending on the provider.
6. Monitor regularly to ensure you stay off the list.

Best Practices to Stay Off Blacklists

• Configure SPF, DKIM, and DMARC records properly.
• Avoid sending unsolicited or high-volume emails.
• Use a reliable email service provider (ESP) with a good reputation.
• Maintain clean mailing lists, remove inactive or invalid addresses.
• Regularly scan your server for malware and suspicious scripts.
• Periodically check your IP and domain using this tool.

Consistent monitoring ensures your mail server and domain remain trusted and deliverable.

Why DNSBL Monitoring Matters

DNS-based blacklists play an essential role in keeping the internet safe from spam and malicious actors.

However, legitimate domains often get listed due to shared IPs or accidental misconfigurations.

Proactive blacklist monitoring helps you:

• Detect issues before they impact customers.
• Prevent your emails from being rejected or flagged.
• Maintain a strong sender reputation.
• Quickly respond to reputation threats.

Our Blacklist Check Tool simplifies ongoing DNSBL monitoring, helping you stay one step ahead.