How to Use IP Blacklist Checker
1. Enter an IP Address, Subnet, or Range
On the home page, you'll find an input field where you can enter:
- A single IP address (e.g., 8.8.8.8)
- A subnet in CIDR notation (e.g., 192.168.1.0/24)
- An IP range (e.g., 8.8.8.8-8.8.8.20)
2. Click "Check"
After entering your IP(s), click the "Check" button. The tool will then query various blacklist databases to check if the IP(s) are listed.
3. Review Results
The results will show whether each IP is listed or not on the following blacklists:
- Spamhaus ZEN
- Barracuda
- SpamCop
- UCEPROTECT
A green checkmark indicates the IP is not listed, while a red X means it is listed on that particular blacklist.
4. Interpret the Results
If an IP is listed on any of these blacklists, it may affect email deliverability or the reputation of the IP. Consider taking action to get the IP removed from the blacklist if it's listed.
5. Regular Checks
It's a good practice to regularly check your IPs to ensure they maintain a good reputation. This tool makes it easy to do quick checks whenever needed.