How can I find out whether my IP address is blacklisted?

Enter your IP address or domain name in the DNSBil Blacklist Lookup tool. The tool checks common blacklists such as Spamhaus, SpamCop, Barracuda and UCEPROTECT at the same time and shows whether you are listed on each of them.

How do I get removed from a blacklist?

First you need to fix the reason for the listing (sending spam, an open relay, malware, and so on). Then you can request removal using the delisting form on the blacklist's website. Requests made before the problem is solved are usually rejected.

Blacklist (DNSBL) Lookup - IP and Domain Blacklist Check

Q: What is a blacklist (DNSBL)?

A DNSBL (DNS-based Blackhole List) is a list of IP addresses and domain names associated with spam or malicious activity. Mail servers check the source of incoming email against these lists to block spam. If your IP address or domain is on a blacklist, your emails may not reach their recipients.

What Is a Blacklist (DNSBL) Lookup?

A DNSBL (DNS-based Blackhole List), or simply a blacklist, is a list of IP addresses and domain names associated with spam or malicious activity. Mail servers around the world check the source of every incoming email against these lists; if the source is listed, the email is marked as spam or rejected outright.

The DNSBil Blacklist Lookup tool checks the IP address or domain name you enter against widely used blacklists such as Spamhaus, SpamCop, Barracuda, UCEPROTECT and SURBL at the same time. If you enter a domain name, it checks both domain-based lists and the IP address the domain points to.

Why Does My Email End Up in Spam?

One of the most common reasons is that the IP address of your sending server is on a blacklist. This can happen because someone else sharing the same IP sent spam, because your server is an open relay, because malware has infected it, or because the SPF/DKIM/DMARC records are missing. Check your blacklist status first; if you are listed, fix the cause and request removal (delisting) from the relevant list.

Frequently Asked Questions

The result says "Query refused". What does that mean?

Some blacklists (especially Spamhaus) refuse queries from public resolvers or high-volume sources and return a special error code. This does not mean you are listed; it only means that list did not answer the query.

Why is the IP address also checked when I look up a domain name?

Because email reputation largely depends on the IP address of the server the domain points to. We resolve the A record of your domain and also check that IP against the IP blacklists, to give you a more complete result.

How long does it take to get removed from a blacklist?

After the cause is fixed, some lists remove you automatically within a few days; others require a manual delisting request. Requests made while the problem continues will be rejected.