--- title: "Domain Reputation Check: Spamhaus, SURBL and Safe Browsing" description: "How to run a domain reputation check against Spamhaus DBL, SURBL and Google Safe Browsing, what a listing means and how delisting works." url: https://hunter.domains/blog/domain-reputation-check language: en --- # Domain Reputation Check: Spamhaus, SURBL and Safe Browsing How to run a domain reputation check against Spamhaus DBL, SURBL and Google Safe Browsing, what a listing means and how delisting works. 3 October 2026 8 min read A domain reputation check looks up your domain against public blacklists used by email providers, ISPs and security vendors to decide whether to block it. The main lists are Spamhaus DBL, SURBL and Google Safe Browsing. A listing on one of these can stop your email from reaching inboxes or prevent the domain from loading in some browsers, but it does not automatically trigger an SEO penalty. What it means depends on which list the domain is on and what it is used for. ## What is a domain blacklist? A domain blacklist is a maintained list of domains that a security or email organization has marked as problematic. The list is published and made available to hundreds of mail servers, corporate firewalls and browsers so that they can block or filter traffic to those domains. These lists are not Google's search index, and they are separate from Google's penalties. A domain can be on a public blacklist but not penalized by Google, and vice versa. The lists track different harms: spam email, phishing, malware, scams. They are automated in many cases: if enough endpoints report a domain as a source of spam mail, for example, it may be listed without human review. Blacklists are maintained by organizations like Spamhaus (a non-profit), SURBL, and Google, using different criteria and update speeds. Each list serves a different audience: email systems, ISPs, ad networks and browsers. ## Spamhaus DBL Spamhaus DBL (Domain Block List) is a widely used blacklist for email filtering. It lists domains used to send spam, host phishing pages, or distribute malware. A domain on Spamhaus DBL is likely to be rejected by mail servers that use the list. Emails sent from a domain on DBL can bounce or go to spam folders even if the mail server itself has a good reputation. If you [buy an expired domain](https://hunter.domains/blog/risks-of-buying-expired-domains) that is on DBL and try to use it for email or a website, you will face delivery issues immediately. Spamhaus DBL entries are added when the organization observes spam activity. They can also be added for very new domains that match high-risk patterns. How long a domain stays on the list depends on Spamhaus, so check their documentation. You can [check any domain against Spamhaus DBL for free](https://www.spamhaus.org/lookup/). Enter the domain name and see whether it is listed. ## SURBL SURBL (Spam URI Realtime Blocklist) is another widely used email blacklist. It lists domains that appear in spam email bodies, spam pages and phishing sites. SURBL is used by mail servers to check the links inside messages. If a domain is on SURBL, links to it in email are more likely to be caught in filters. Listings are added when a domain is observed in spam campaigns or as a phishing target. You can check a domain at [SURBL's lookup page](https://www.surbl.org/lookup). Enter the domain and see its status. ## Google Safe Browsing Google Safe Browsing is Google's public list of sites known to host malware, phishing pages or unwanted software. A domain on this list will show a warning in Chrome, Firefox and other browsers when users try to access it. Google bases Safe Browsing listings on automated detection systems and user reports. A listing can appear quickly after a site starts hosting malicious content. When a site no longer hosts harmful content, the warning is removed after Google re-checks it. A Safe Browsing listing is visible: when users visit the domain, they see a large red warning page. This is very different from a quiet email filter rejection. A Safe Browsing warning will almost certainly destroy traffic and income from the domain. To check a domain's Safe Browsing status, use Google's [Transparency Report](https://transparencyreport.google.com/safe-browsing). Enter the domain and you will see whether it has a current warning. You can also use a tool like [URLhaus](https://urlhaus.abuse.ch/) for additional visibility. ## Does a blacklist listing hurt your SEO? Being listed on Spamhaus DBL, SURBL or Google Safe Browsing does not automatically trigger a Google search penalty. Google does not use these lists as ranking factors. However, a Safe Browsing warning will tank your traffic because users will not visit the domain, and a website that is not visited will not rank well. The damage is indirect: no traffic means no way to prove to Google that the site has value. A DBL or SURBL listing affects email delivery. If you plan to use the domain for email, a blacklist listing will break that immediately. If you plan to use the domain for a website with no email, the listing may not matter much as long as it is removed soon. [What matters more for SEO is whether the domain carries spam history or manual actions](https://hunter.domains/blog/how-to-check-if-a-domain-is-penalized). A blacklist listing is a public signal that the domain was involved in spam. Google's manual action policy on expired domain abuse (introduced in March 2024) targets domains repurposed to manipulate rankings. A domain with spam history and a blacklist listing is higher risk, even if the listing itself is not a ranking factor. ## How to request removal Delisting is different for each blacklist. **Spamhaus DBL:** You can appeal a Spamhaus listing if you own the domain. Go to the [Spamhaus Lookup page](https://www.spamhaus.org/lookup/), enter your domain, and look for the removal request option. Expect to show that you control the domain and that the listing no longer applies. Processing times and any fees are set by Spamhaus, so check their site. **SURBL:** Request removal at [SURBL's removal page](https://www.surbl.org/removal). Expect to show that you own the domain and that it is no longer sending or hosting spam. Processing times are set by SURBL. **Google Safe Browsing:** If a domain no longer hosts malicious content, Google will usually remove the warning automatically once its crawlers re-visit. You can request a manual review by visiting [Google Search Console](https://search.google.com/search-console/about) (you must be a verified owner) or by filling out Google's [Safe Browsing reporting form](https://safebrowsing.google.com/safebrowsing/report_phish/?hl=en). For all three lists, removal is faster if you can show that the harmful content has been deleted or taken offline. Keeping the domain parked or offline does not help; you need to actively clean it. ## Should you buy a domain on a blacklist? A domain listed on Spamhaus DBL or SURBL can be salvaged if you plan to use it for a website and you are willing to go through the delisting process. The main cost is time, though each list sets its own process and any fees, so check their sites. You can also browse the [live list of expired domains](https://hunter.domains/domains), which is already filtered against Spamhaus DBL and SURBL. A domain with a Google Safe Browsing warning should be avoided unless you are confident you can get it removed quickly. The warning stays visible until Google clears it, and that will block most traffic in the meantime. More important than the blacklist status is whether the domain has a [history of spam](https://hunter.domains/blog/expired-domain-spam-history). If it was listed for spam but cleaned up years ago, and if the Wayback Machine shows legitimate content, the listing may be less concerning. If it was listed for spam recently and the archive shows recent spam content, that is a much harder flag. [Use a domain reputation check alongside checks of the archive history](https://hunter.domains/blog/wayback-machine-domain-history) and [spam signals in the backlink profile](https://hunter.domains/blog/toxic-backlinks-expired-domains). [Hunter.domains flags domains on blacklists](https://hunter.domains/how-it-works) as part of its filtering (it checks Spamhaus DBL and SURBL), so a listed domain does not reach you. A blacklist listing alone is not a reason to skip a domain if the rest of the history is clean, but it is a signal to dig deeper. ## Frequently asked questions ### How do I check a domain's reputation? Use the free lookup tools provided by the blacklist operators. For Spamhaus DBL, go to [spamhaus.org/lookup](https://www.spamhaus.org/lookup/); for SURBL, go to [surbl.org/lookup](https://www.surbl.org/lookup/); for Google Safe Browsing, check [transparencyreport.google.com](https://transparencyreport.google.com/safe-browsing). These checks take seconds and require no account. You can also use third-party reputation checkers like URLhaus or Google's own [Safe Browsing API](https://developers.google.com/safe-browsing) if you are checking many domains. ### Why does a domain get blacklisted? Domains are listed when they are observed sending spam email, hosting phishing pages, distributing malware, or appearing in spam campaigns. Listing is often automated, triggered by abuse reports from users, mail servers or security vendors. A listing can appear quickly once a domain is used for malicious activity. New domains can also be listed based on risk patterns before any actual abuse occurs. ### How long does it take to remove a domain from a blacklist? It varies by list. Each operator sets its own process, timing and fees, so check the Spamhaus and SURBL removal pages directly. Removal is faster when you can show that you own the domain and that the harmful content has been removed. For Google Safe Browsing, the warning is normally cleared after the malicious content is gone and Google has re-checked the site, and you can request a manual review if you are the verified owner. ## We find domains that meet these criteria every day Expired domains with a clean history and real authority, listed with a score; the ones matching your rule land in your inbox the moment they appear. [See today's catch](https://hunter.domains/domains) ## Related articles History checks ### [How to Check Domain History: 6 Free Checks Before You Buy](https://hunter.domains/blog/how-to-check-domain-history) How to check domain history before you buy: past content, owners, links, Google status and blacklists, with the free tool that answers each question. 3 October 2026 11 min read History checks ### [Domain Spam Score: What It Measures and What’s a Good One](https://hunter.domains/blog/domain-spam-score) What a domain spam score measures, what counts as a good one and why it is a hint rather than a verdict. Plus the real checks to run when it is high. 3 October 2026 7 min read Using domains ### [Aged Domains for Cold Email: What Matters and What Doesn’t](https://hunter.domains/blog/aged-domains-for-cold-email) Do aged domains for cold email improve deliverability? What mailbox providers look at, why reputation beats age and how to vet a domain first. 3 October 2026 7 min read ## Don't miss the next good domain. Set your rule and leave the rest to us. You hear the moment a matching domain is found. [Get started free](https://hunter.domains/register)