downdetector.com
As of Nov 9, 2026, downdetector.com's ads.txt lists 246 seller lines across 70 ad systems, its robots.txt allows GPTBot, OAI-SearchBot, ChatGPT-User, ClaudeBot, and 9 more, and its DMARC policy is quarantine.
Checked daily since Nov 1, 2026. JSON. Link to this check. Run this site? Remove or correct this report.
Checked Nov 9, 2026, 22:16 UTC
| File | Status | What the robot saw | Same since |
|---|---|---|---|
| ads.txt | REVALIDATED | 246 seller lines, 70 ad systems. | 2026-11-06 |
| app-ads.txt | RESTRICTED | The site turned the robot away. No good check yet. | |
| sellers.json | RESTRICTED | The site turned the robot away. No good check yet. 24 lines have no matching seller at appnexus.com, datablocks.net, emxdgt.com, google.com, and 9 more. Evidence 108 lines not judged: the ad system's sellers.json could not be read. | |
| robots.txt | SUCCESS | 13 rules for 13 AI crawlers. Allows GPTBot, OAI-SearchBot, ChatGPT-User, ClaudeBot, and 9 more. | 2026-11-07, first check |
| llms.txt | RESTRICTED | The site turned the robot away. No good check yet. | |
| DMARC | SUCCESS | p=quarantine. Reports on. | 2026-11-07, first check |
| MTA-STS | NOT_FOUND | No MTA-STS record. | 2026-11-07, first check |
| BIMI | NOT_FOUND | No BIMI record. | 2026-11-07, first check |
| security.txt | RESTRICTED | The site turned the robot away. No good check yet. |
Sell to publishers like this one? Publisher Watch tells you when any of 8,118 publishers adds or drops an ad seller.
See Publisher Watch
These are the site's own public files, as fetched, with the date. The robot reports what is published. It does not judge compliance, approval, or intent. A failed fetch is a failed fetch, never a missing file.
Not checked: anything behind a login, account settings, or private feeds. Whether crawlers obey robots.txt. Business deals: a file line is not a contract.