on3.com
As of Nov 9, 2026, on3.com's ads.txt lists 599 seller lines across 120 ad systems and its DMARC policy is none.
Checked daily since Oct 31, 2026. JSON. Link to this check. Run this site? Remove or correct this report.
Checked Nov 9, 2026, 23:15 UTC
| File | Status | What the robot saw | Same since |
|---|---|---|---|
| ads.txt | ADDED | 599 seller lines, 120 ad systems. 4 changes since Nov 6. See the changes | 2026-11-06 |
| app-ads.txt | SUCCESS | 548 seller lines, 109 ad systems. | 2026-11-03, first check |
| sellers.json | NOT_FOUND | Not found. The site answered 404. 79 lines have no matching seller at advertising.com, appnexus.com, connectad.io, emxdgt.com, and 19 more. Evidence 224 lines not judged: the ad system's sellers.json could not be read. | 2026-11-05, first check |
| robots.txt | SUCCESS | Read. No rule names an AI crawler. | 2026-11-06, first check |
| llms.txt | NOT_FOUND | Not found. The site answered 404. | 2026-11-06, first check |
| DMARC | SUCCESS | p=none. Reports on. | 2026-11-06, first check |
| MTA-STS | NOT_FOUND | No MTA-STS record. | 2026-11-06, first check |
| BIMI | SUCCESS | Logo record published. | 2026-11-06, first check |
| security.txt | NOT_FOUND | Not found. The site answered 404. | 2026-11-06, first check |
4 changes since Oct 31
ads.txt sellers on Nov 6.
ads.txt sellers on Nov 6.
ads.txt sellers on Nov 6.
See before and after
on3.com changed its ad sellers on Nov 6. Publisher Watch finds changes like this across 8,118 publishers. One email a day.
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.
Changed today
| tiempo.com | ADDED | New ads.txt seller: video.unrulymedia.com | 00:21 UTC |
| tiempo.com | MODIFIED | ads.txt seller for themediagrid.com | 00:21 UTC |
| tiempo.com | ADDED | New ads.txt seller: teads.tv | 00:21 UTC |
| tiempo.com | ADDED | New ads.txt seller: openx.com | 00:21 UTC |