Domain reputation
Is your domain blocklisted?
Check a domain against the major DNS blocklists that receiving mail servers consult, across every address the domain answers on.
01How it works
Judged on every address the domain answers on.
Every address, not just the first
The domain is resolved to the addresses it answers on and each is checked. A listing on any of them is a listing on the domain, so a clean sibling cannot dilute the result.
The blocklists that matter
Checked against the DNS blocklists receiving servers actually consult, not an arbitrary list padded to look thorough.
An honest score
A provider that refuses to answer is reported as such, never counted as clean or as a listing, so the verdict reflects real data.
FAQ
About domain reputation
Domain or email address?
A domain: example.com, not [email protected]. The tool resolves the domain’s own addresses and checks those.
Does this check my mail server?
No. It checks the addresses the domain itself resolves to, not the hosts in its MX records. Those are often different machines, and mail server reputation is part of the paid product.
My domain is listed. What now?
Note which address is listed and on which blocklist, then follow that provider’s delisting process. A listing on a major blocklist will hurt deliverability until it is cleared.
Is this the same as an SPF/DKIM check?
No. This tool is specifically about blocklist status. Full domain reputation (authentication, age and more) is part of the paid product.
Is there a limit?
No daily limit and no sign-up. A verification step runs on each check to prevent automation.
Does a clean result mean I can send?
No. Blocklist status is one signal. Deliverability also depends on authentication, list quality and sending reputation. Use this as a check, not as a send decision on its own.
Send from a domain people trust.
Clean lists protect your domain’s reputation. Verify recipients with scored, explainable results. 100 free credits to start.