⛔IP Blacklist Checker
Check if an IP address is listed on major spam and abuse blacklists (DNSBLs). Verify your IP's reputation across multiple blocklists.
⛔ Check IP Blacklist Status
Enter an IP address above.
How It Works
We check the given IP against several popular DNS-based blacklists (DNSBLs) by performing reverse DNS lookups. If the IP is listed, the DNSBL returns a positive result.
Frequently Asked Questions
What is an IP blacklist?
An IP blacklist (DNSBL) is a database of IP addresses known for sending spam or being involved in malicious activity. Email servers and firewalls check these lists to filter unwanted traffic.