Domain Blacklist Checker
Enter a domain to see if it's listed on common domain-based blacklists.
What is a DNS blacklist (DNSBL)?
A DNS-based blacklist (DNSBL) is a published list of domains or IP addresses that are known to send spam, host phishing pages, or distribute malware. Instead of downloading the list, applications query it live over DNS — your mail server or security tool asks "is this domain listed?" and receives an immediate yes or no.
Domain-based blacklists (also called RHSBLs or URI lists) record the domains that appear in spam email, phishing URLs, or malicious redirects. This checker queries the domain itself, not its IP address, which makes it a fast first step before a full malicious domain alert investigation.
Blacklists we check
This free checker looks up 12 domain-based blacklists in real time:
| Blacklist | Zone | What it lists |
|---|---|---|
| Spamhaus DBL | dbl.spamhaus.org | Domain-based blocklist |
| SURBL multi | multi.surbl.org | Phishing/malware domains |
| ivmURI | uri.ivmuri.com | URI-based blocklist |
| Nordspam DBL | dbl.nordspam.com | Nordic domain blocklist |
| SEM FRESH | fresh.spameatingmonkey.net | Freshly registered spam domains |
| SEM URI | uri.spameatingmonkey.net | URI-based spam domains |
| SEM URIRED | urired.spameatingmonkey.net | Redirector spam domains |
| SORBS RHSBL BADCONF | rhsbl.badconf.sorbs.net | Bad-configuration RHSBL |
| SORBS RHSBL NOMAIL | rhsbl.nomail.sorbs.net | No-mail RHSBL |
| 0SPAM | fresh.spam.0spam.org | Fresh domain spam |
| Abusix DBL | dbl.abusix.org | Abusix domain blocklist |
| MSRBL Phishing | phishing.msrbl.com | Phishing domain blocklist |
What does it mean when a domain is listed?
A listed result means the domain currently appears on that blacklist. Depending on how the list is used, this can cause:
- Email sent from the domain to be rejected or filed as spam.
- Links to the domain to be flagged by security products.
- Alerts in downstream threat-intelligence and brand-monitoring tools.
A listing is usually a symptom — the underlying cause is typically compromised hosting, an email account sending bulk mail, or the domain being used in phishing. Resolve the cause first, then request removal.
How to get your domain delisted
Each blacklist operator runs its own removal process. In all cases, start by confirming the listing is valid and fixing the reason it happened, then follow the operator's delisting instructions:
- Spamhaus — use the Spamhaus lookup and follow the delist instructions shown for the specific blocklist.
- SURBL — submit a request via the SURBL removal form for the domain that appears in spam.
- Other operators (Abusix, SORBS, 0SPAM, MSRBL, Nordspam, SpamEatingMonkey) — each provides its own removal request page; check the operator's documentation for the zone that listed you.
Delisting can take anywhere from a few hours to a few days. If a listing persists after you have fixed the cause, re-check the domain here after 24–48 hours and re-submit if needed.
Frequently asked questions
Is the domain blacklist checker free?
Yes. It is completely free and requires no signup. Enter any domain and it is checked against all 12 blacklists within seconds.
Which blacklists does Primitive Host check?
Spamhaus DBL, SURBL multi, ivmURI, Nordspam DBL, SpamEatingMonkey (fresh, URI, and redirector lists), SORBS (badconf and nomail), 0SPAM, Abusix DBL, and MSRBL Phishing.
What is a DNS blacklist (DNSBL)?
A DNS-based blacklist is a list of domains or IP addresses known for spam, phishing, or malware. It is queried in real time over DNS, which is why checks return results almost instantly.
What does it mean when a domain is listed?
It means the domain appears on that blacklist, which can cause email delivery failures or trigger security alerts — usually a sign of spam or abuse history on the domain.
How do I get my domain removed from a blacklist?
Each operator runs its own removal process. Fix the underlying cause first, then follow the delisting instructions of the specific operator (for example, the Spamhaus removal process or the SURBL delisting form).