Check whether your domain is listed across a curated set of public domain, URI, and reputation blacklists, grouped by importance, that email filters use to score the links inside a message. It runs free and instantly in your browser over DNS-over-HTTPS, with no signup and nothing stored.
A domain blacklist, also called a URI blacklist or domain DNSBL, is a list of domain names with a poor reputation. Unlike IP blacklists, which judge the sending server, these lists target the domains that appear inside a message: the links in the body, the sender domain, and any domains the links redirect to. Mail servers extract those domains and run a DNS query against domain blacklists like SURBL (multi.surbl.org). If a domain is listed, the list returns a 127.0.0.x address; if it is clean, the list answers NXDOMAIN. A listing here can hurt delivery for every message that mentions your domain, even mail sent from a clean IP.
The list returned NXDOMAIN for your domain. That is the result you want, and a clean overall verdict means none of the checked lists currently flag your domain.
The list returned a 127.0.0.x code, which means your domain is on it. For SURBL the tool also decodes the code into a category (for example phishing, malware, or abuse); other lists report a listing without a category. Note any category shown before you request removal.
This tool queries public domain, URI, and reputation blacklists that return a usable answer over browser DNS, from the industry-standard SURBL down to regional lists, grouped by importance with the response time for each. Spamhaus and URIBL block browser DNS, so they are linked separately to check directly. A clean result is not a guarantee across every list.
Spamhaus and URIBL block open public resolvers, so a browser query can never get a real verdict from them. Rather than show meaningless rows, the tool links them below the results so you can check directly at spamhaus.org and uribl.com. Only a 127.0.0.2 or higher reply from a queried list is a real listing.
Alongside the blacklist result, the tool shows the domain's public registration data: registrar, age, expiry, and name servers, fetched directly from your browser against the public RDAP service for the domain. A brand-new or recently re-registered domain often carries weaker reputation, so registration age is a useful deliverability signal. Some country-code extensions publish no RDAP data.
The most common cause is spammers linking to your domain in their messages, often without your involvement. Filters see your domain in spam and list it. Identify the campaigns abusing your domain, then file a removal request once the activity stops.
If your site was hacked and is serving spam pages, malware, or hidden redirects, lists will flag the domain. Clean the infection, remove injected pages and scripts, patch the vulnerability, and confirm the site is clean before requesting delisting.
A subdomain used for spam, or an open redirect that forwards to malicious URLs, can list your whole domain. Audit your subdomains and any redirect endpoints, close the open redirect, and remove the offending hosts.
New domains, or domains previously owned by a spammer, sometimes carry a bad reputation. Warm the domain with legitimate traffic over time and request removal with evidence the abuse has ended.
SURBL reviews the domain at the time of the request and rejects submissions when the root problem is still live. Fix the underlying issue first, then file the removal form with a clear technical explanation of what you found and changed.
