whatismyip.zoneWhat is an IP Blacklist?
An IP blacklist is a real-time database of IP addresses that are known for sending spam or engaging in malicious activity. Email servers and firewalls around the world use these lists to block unwanted traffic before it even reaches them.
Why is it Important to Check?
If your website's or email server's IP address ends up on a blacklist, your emails to customers, partners, and employees could be blocked and never delivered. This can severely impact your business. Reasons for being blacklisted include:
- A compromised computer on your network sending spam without your knowledge.
- Sending marketing emails that recipients mark as spam.
- Being on a shared hosting server where another user is the spammer.
Regularly checking your IP is a key part of good cybersecurity hygiene. If you find you are listed, you must contact the blacklist provider to request removal after fixing the underlying issue.