Spam Score Checker: Check Website Spam Risk Free

How the spam score is calculated

When Moz data is available, we show its percentage-based Spam Score. Otherwise, the following public signals produce an explicitly labeled Estimated result on the same 0 to 100 display scale:

• Domain age: very young domains (under 1 to 2 years) score higher risk, since disposable spam domains are typically short-lived. Age comes from the official registry.
• Blocklist hits: we check the public Spamhaus Domain Blocklist (DBL) for known-bad domain listings.
• HTTPS status: missing or invalid SSL is a mild risk signal.
• TLD risk: some top-level domains (e.g. .xyz, .top, .click) are statistically over-represented in spam and abuse data.

We publish every rule on purpose. See the full breakdown on our methodology page. A low score is a good sign, not a guarantee; always check a domain manually before a high-value decision like a link purchase.

What is a good spam score?

These are Moz's own bands. New sites sometimes land in the medium band only because they have few links yet.

Reading the risk checks

Each check under the score shows a green tick for pass, a red warning for fail, or a grey question mark when the check couldn't run. A grey Spamhaus result means Spamhaus didn't answer, so the tool says so instead of calling the domain clean.

One red flag is a reason to look closer. A Spamhaus listing on its own is serious, because Spamhaus only lists domains it has seen used for spam or abuse.

Spam score vs Domain Authority

Spam Score measures risk, and Domain Authority measures link strength. A site can have both a high DA and a high Spam Score, which is a common pattern for expired domains rebuilt to sell links. To read the two together with a single verdict, use the DA PA SS checker. Our Spam Score guide covers how Moz builds the metric.