Scan any expired domain for hidden spam before you buy

Buying an expired domain without checking its history is how people end up with a DR 30 name that will never rank, no matter how much content you throw at it. We built the clean checker because we got tired of doing this manually for every listing. It is the same pipeline we run on our own inventory, and it is free to use on any domain, not just ours.

Running a check

Type in the domain and hit "Check History Free." A full scan takes 30 to 60 seconds because it queries the Wayback Machine archive live rather than pulling from a stale cache. Once it is done, the result is cached for 30 days, so a second lookup on the same name is instant. Signed-in accounts get more daily checks than anonymous visitors, which matters if you are working through a list of fifty candidates.

What the four evidence groups actually measure

Wayback History carries the most weight, 40% of the score. It looks at years active, gaps of a year or more that usually mean the domain dropped and sat unused, stretches where the homepage was mostly a 301 redirect, spam tokens showing up in old URLs and titles, and abrupt language switches in the site's past.

Google Index accounts for 15%. It checks whether the domain still returns anything for a site: query, and whether those indexed titles look like a real business rather than a doorway page.

Safe Browsing is another 15%, a straight check against Google's malware and phishing blocklists.

Anchor Profile is the remaining 30%, and it is often the most revealing number on the page. It looks at anchor text on live backlinks, weighted by referring domains. If a non-CJK site has a heavy share of casino, pharma or CJK anchors, that is the classic fingerprint of a domain that spent a previous life as a link farm.

Reading the verdict

A score of 80 to 100 comes back CLEAN, meaning no spam signals turned up and the name is safe to shortlist. Between 55 and 79 is CAUTION, which just means something needs a human look, so open the sampled titles and archive stats on the result page before deciding either way. Below 55 is DIRTY, and honestly, at that point we do not bother arguing with the score. Clear spam footprints mean the domain usually is not worth restoring at any price. UNKNOWN shows up when there is not enough evidence, often a domain that was never archived. Treat that as unvetted, not as clean, since no evidence is not the same thing as good evidence.

The result page also shows the domain's first and last archive years, snapshot count, sampled homepage titles across time, and the top anchor texts, which is the same raw evidence our own screening team reads before a domain ever gets listed. Every domain on baovietnam.org has already passed this exact pipeline, which is why each listing ships with its clean score displayed up front.