Blacklist Check
Check whether a domain or IP address appears on major email and spam blacklists.
| Blacklist | Status |
|---|
About the Blacklist Check
DNS blacklists, also called DNSBLs or RBLs, are databases that track IP addresses associated with spam, malware, or other abusive behaviour, and many mail servers consult them automatically before accepting incoming email. Being listed on even one blacklist can cause legitimate email to be rejected or filtered straight to spam without any obvious warning to the sender. This tool checks an IP address against multiple major blacklists at once, so you can quickly see if it has been flagged anywhere.
How it works
DNSbyte queries an IP address against several widely used DNS blacklists simultaneously, each one maintained independently with its own listing criteria and removal process. A listing on one blacklist does not necessarily mean a listing on others, since different lists track different types of abuse and have different sensitivity levels.
If an IP is listed, the result identifies which specific blacklist flagged it, which is the first step toward finding that list's removal process, since each blacklist operator handles delisting independently.
Frequently asked questions
My IP is listed, how do I get it removed?
Each blacklist operator has its own delisting process, usually found on that blacklist's own website, often requiring you to confirm the underlying issue has been fixed before requesting removal. There is no single universal removal process since the lists are run independently.
I have not sent any spam, why is my IP listed?
IP addresses are sometimes listed due to being part of a range previously used for abuse, even if your specific use is legitimate, particularly common on shared hosting or cloud provider IP ranges that have been reused. It can also happen if a server was compromised and used to send spam without the owner's knowledge.
How often do blacklists update their data?
This varies significantly by list, some update near instantly when abuse is detected, others on a slower periodic basis. Similarly, delisting can take anywhere from minutes to several days depending on the specific blacklist's process.
Does being on a blacklist affect anything other than email?
The most common impact is email deliverability, since many mail servers check blacklists before accepting messages, but some blacklists are also consulted by firewalls, spam filters, and security tools for purposes beyond just email, depending on the specific list.
Should I check this regularly even if I have had no problems?
It is good practice to check periodically if you operate your own mail server, since a listing can happen without obvious symptoms until someone tells you their messages are not arriving. For most everyday websites and personal email use, this is mainly relevant if you suspect deliverability problems.