IP Blacklist Checker — Is Your IP Blacklisted?
Last Updated: April 2026
Check if your IP address or domain is listed on major spam blacklists. Free IP blacklist checker. Protect your email deliverability. Check 100+ blacklist databases.
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Launch the IP Blacklist Checker tool — fully free, no signup required.
What Is an IP Blacklist?
Why Does IP Blacklisting Happen?
How IP Blacklisting Affects Email Deliverability
How to Remove Your IP from a Blacklist
Frequently Asked Questions
Q: What is an IP blacklist?
A: An IP blacklist is a database of IP addresses known to send spam, malware, or malicious traffic. Email servers check these lists to decide whether to accept or reject incoming messages.
Q: How do I remove my IP from a blacklist?
A: Identify which blacklist your IP is on using this tool. Visit that blacklist's website and follow their delisting procedure. Fix the underlying issue first, such as securing a hacked email account.
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