Blacklist Checker

🚫 Blacklist Checker – Free Online Tool | TradeInfo.Online

Instantly Check If Your Domain or IP Is Blacklisted

If your emails are landing in spam or your website traffic suddenly drops, there's a chance your domain or IP address is blacklisted. TradeInfo.Online's Blacklist Checker is a free online tool that lets you scan your domain or IP across dozens of global spam databases and DNSBLs (DNS-based blacklists) instantly — no signup or technical expertise required.

With just one click, you can detect, diagnose, and start resolving blacklist issues before they harm your deliverability or SEO.

🧠 What Is a Blacklist in the Digital World?

A blacklist is a list of domains or IP addresses identified as suspicious or harmful by spam filters, anti-virus software, internet service providers (ISPs), and global monitoring databases.

Domains or IPs may get blacklisted for reasons such as:

Sending bulk/spam emails

Hosting malware or phishing content

High bounce rates from email campaigns

Misconfigured mail servers (open relays)

Being part of shared hosting environments with bad actors

Once blacklisted, your emails might get rejected, flagged as spam, or your site could be blocked by browsers and search engines.

🔍 Why Use a Blacklist Checking Tool?

The Blacklist Checker at TradeInfo.Online provides:

✅ Instant scanning across 50+ known DNSBLs (DNS Blacklists)
✅ Detection of listings on spam-tracking services like Spamhaus, Barracuda, SORBS, UCEPROTECT, and more
✅ Both domain-based and IP-based blacklist checks
✅ Real-time results with zero configuration needed

With one search, you get the peace of mind that your domain and IP are clean — or the early warning signs that action is needed.

💡 Who Should Use This Tool?

This tool is valuable for:

📩 Email Marketers

Ensure sending domains and IPs aren’t listed, which affects open and click-through rates

Troubleshoot sudden deliverability issues

Validate new domains before use in campaigns

🌐 Website Owners

Detect if your website is on blacklists that cause slowdowns or browser warnings

Prevent SEO penalties due to flagged domains

🧑‍💻 Developers & Sysadmins

Monitor email servers (SMTP) for open relays or spam triggers

Secure shared IP addresses from damage by other users

📈 SEO Experts

Ensure clean domain reputations for better indexing

Analyze backlink sources or referring domains for blacklist status

🚀 How the Blacklist Checker Tool Works

When you enter a domain or IP address:

The tool queries major DNS-based blacklists (DNSBLs) and Realtime Blackhole Lists (RBLs)

Each blacklist responds with a positive (listed) or negative (not listed) result

Results are categorized and displayed in a clear, readable table

You’ll instantly know if your website or mail server is being flagged anywhere globally.

🔎 Popular Blacklists We Check Against

Our tool checks against all major and most-used blacklists, including:

Spamhaus (ZEN, SBL, XBL, PBL)

SORBS

Barracuda

UCEPROTECT

PSBL (Passive Spam Block List)

DNSBL.info

NIXSPAM

Abuse.ch

SEM-BLACK

Lashback

Invaluement

Trend Micro RBLs

This broad coverage ensures you’re not surprised by silent blacklisting.

🧰 How to Use the Tool (Step by Step)

Visit: https://tradeinfo.online/tools/blacklist-checker

Enter your domain or IP address

Click on the Check Blacklist button

Get real-time scan results in seconds

If listed, the tool will show which blacklists have flagged your entry.

⚠️ Why Blacklists Matter for Your Domain

Being listed on one or more blacklists can result in:

📉 Email issues: Your newsletters go straight to spam

🔒 Blocked websites: Users may see security warnings

🚫 SEO problems: Search engines avoid linking or crawling flagged sites

🧨 Loss of trust: Customers and partners hesitate to interact

The scary part? Most website owners don’t even know they’ve been blacklisted.

That’s why regular checks with this tool are vital.

🧪 What To Do If You’re Blacklisted

If you’re flagged, don’t panic. Follow these steps:

Identify the blacklist(s) you're listed on

Check your domain or server logs for suspicious activity (spam, bots, etc.)

Clean up your server or website (update plugins, remove malware)

Fix mail server misconfigurations (SPF, DKIM, reverse DNS)

Request delisting through the blacklist’s official form or contact page

Each DNSBL typically has a dedicated removal process.

Tip: Use TradeInfo.Online’s Find DNS Record to verify correct SPF, DKIM, and MX records before reapplying.

🔐 Is It Safe to Use This Tool?

Absolutely.

No login required

You don’t need to verify ownership of a domain or IP

No personal data is stored

HTTPS encryption ensures safe queries

You can freely check domains you own or monitor competitor/partner status too.

📊 Blacklist vs. Whitelist: Know the Difference

Blacklist: Domains/IPs considered suspicious or dangerous — blocked or filtered

Whitelist: Safe and trusted domains/IPs — allowed to bypass filters

Our Blacklist Checker helps remove your domain from blacklists, but to get whitelisted, you’ll need good domain behavior (reputation, security, mail hygiene, etc.).

💼 Real-Life Examples of Why This Tool Matters

📬 Email Delivery Crisis

A company suddenly notices newsletters are not reaching subscribers. Using this tool, they find their domain is blacklisted by Spamhaus. After fixing SPF records and applying for delisting, email performance is restored.

🌐 SEO Drop Investigation

An eCommerce site drops in Google rankings. After a scan with this tool, they find that one of their old subdomains is blacklisted due to malware from outdated WordPress plugins.

📦 Hosting Misuse

A user on shared hosting sends spam, blacklisting the entire server IP. Everyone sharing that IP gets affected. You can use this tool to check IPs before choosing hosting providers.

🧲 Combine With These Related Tools

For a complete domain and email health check, pair this with:

🧾 Find DNS Record – Ensure your DNS is properly configured

📍 IP Address Location – Know where your server IP is hosted

📧 Domain Hosting Checker – Detect your hosting provider or CDN

🛡️ Domain Authority Checker – Review SEO health and strength

🧩 Final Thoughts: Stay Off the Blacklist

Reputation on the internet is fragile. One misconfiguration, outdated plugin, or shared IP abuse can get your domain blacklisted — affecting everything from emails to traffic to sales.

That’s why TradeInfo.Online’s Blacklist Checker is an essential free tool for:

Digital marketers

Server admins

Business owners

SEO professionals

Anyone managing a domain