No listing returned
The available source returned no current entry for that query. This is limited to that source and moment in time.
Check a domain against public blocklists
See whether a domain is currently returned by the public reputation lists queried by this tool.
- No account required
- Named sources shown
- Unavailable lookups stay inconclusive
What is a domain blocklist?
A domain blocklist is a reputation dataset containing domains associated with spam, phishing, malware, unwanted-message links or other abusive activity. Mail and security systems can query these lists when evaluating links in message content, sender identity or web requests.
Every list has its own evidence, policy and removal process. A listing may refer to the registrable domain, a specific hostname or infrastructure observed at an earlier time. Legitimate domains can also be compromised and listed because attackers placed malicious content on an otherwise trusted website.
This checker performs point-in-time DNS queries against the named public domain-reputation sources shown in the results. It does not combine every commercial dataset and it never treats a blocked, rate-limited or unavailable query as a clean result.
How the checker works
- 01
Normalize the domain
URLs are reduced to a lowercase hostname without paths, fragments or a trailing dot.
- 02
Build source queries
The hostname is appended to each named public domain-list query zone.
- 03
Interpret DNS answers
A supported loopback response indicates a listing; NXDOMAIN indicates no listing was returned by that source.
- 04
Preserve uncertainty
Refused, blocked and failed lookups are marked unavailable instead of being counted as clean.
What domain blocklist results mean
Listed
The source returned a positive reputation-list response. Confirm it directly with the operator and read its listing category before remediation.
Lookup unavailable
The public source refused, rate-limited or did not complete the query. The checker draws no reputation conclusion from it.
Different tools disagree
Sources observe different abuse signals and refresh at different times. Conflicting results are normal and should be investigated individually.
What to do when a domain is listed
Confirm the exact hostname
Check whether the entry applies to the root domain, a subdomain or a linked URL. Avoid changing mail infrastructure based only on a similarly named host.
Investigate compromise
Review web files, administrator accounts, redirects, DNS changes and application logs. Remove malicious content and rotate affected credentials before requesting removal.
Review outbound messages
Inspect recent campaigns, templates and user-generated links. Stop unauthorized sending and remove destinations that violate the list operator’s policy.
Follow the operator’s process
Each source controls its own data. Document remediation, use its official lookup page and allow the stated refresh period after delisting.
Frequently asked questions
Practical answers about this checker and the signal it evaluates.
Does a clear result guarantee email delivery?+
No. Providers also use IP reputation, authentication, engagement, complaint rates, content and private intelligence. A public domain-list check is one diagnostic signal.
Can Envelaro remove a domain from a list?+
No. Only the list operator can change its dataset. Envelaro shows the source result and recommends confirming the entry through that operator’s official process.
Why can a legitimate domain be listed?+
Common causes include a compromised website, abused subdomain, malicious redirect, unauthorized campaign or a previously harmful registration. The listing reason determines the correct fix.
How often should I check domain reputation?+
Check after security incidents, unexplained delivery changes and major sending migrations. Ongoing operators should also monitor provider feedback and abuse reports rather than relying on manual checks alone.