duplichecker.com is up, but it refused us. On 16 September 2026 it answered HTTP 403 to a datacenter connection in Germany, showing "Attention Required!". A list you cannot fetch from a server is not much use for automation, which is the main reason people look these up.
What it was
DupliChecker free proxy list is not a proxy company at all; it runs a proxy-list page alongside its other tools. It is run independently, not by a proxy seller.
A plagiarism-checker SEO tool site with one free-proxy-list page. It competes for the keyword without being a proxy brand.
The record, with dates
The Internet Archive first captured duplichecker.com on 20 September 2007 and last captured it on 11 September 2026, 19 years apart, 6000 captures in all, the most of them in 2024. Read on 17 September 2026.
The registry record for duplichecker.com says the name was registered on 19 June 2007, its term runs to 19 June 2032, the registrar of record is GoDaddy.com, LLC. Read on 17 September 2026.
What we checked, and how
We asked duplichecker.com ourselves on 16 September 2026, from a datacenter connection in Germany, following redirects by hand so the chain is on the record. What came back: HTTP 403 (HTTP 403). We did not read the site from a home connection and we did not save its pages; the result above is the whole of what we took.
What to use instead
A free list is a list of other people's machines, and it behaves like one: the addresses that answer at breakfast are gone by lunch, the country label is often wrong, and anything you send through one is readable by whoever runs the exit. That is true of every name on this page, alive or gone.
If you are testing whether a target blocks proxies at all, a free list is fine and costs nothing. If the job has to finish, has to come from a country you chose, or carries a login, it needs addresses somebody is accountable for. What we sell starts at $0.44 per GB, pay as you go, with no plan to reach first.
Our own maintained lists are here, and the wider picture of which of these sites still work is in our census of free proxy sites.
The limits of this record
- We checked once, on one day, from one place.
- A 403 to us is not a 403 to everyone; the site may serve a browser from a home connection perfectly well.
- We do not know who runs it, where the addresses come from, or whether anyone tests them before publishing. Nobody in this corner of the market publishes that.
This page is due for a re-check by 16 March 2027, or sooner if the status above changes.
Sources
- HProxy, our own status check of duplichecker.com, 16 September 2026, from a datacenter connection in Germany.
- Internet Archive, capture index for duplichecker.com. Read 17 September 2026.
- Registry record (RDAP) for duplichecker.com. Read 17 September 2026.
- The address as published: https://www.duplichecker.com/free-proxy-list.php.
