tumblr.com
As of Nov 6, 2026, tumblr.com's ads.txt lists 21 seller lines across 16 ad systems, its robots.txt blocks ClaudeBot, anthropic-ai, Google-Extended, CCBot, and 3 more, and its DMARC policy is quarantine.
Checked daily since Oct 31, 2026. JSON. Link to this check. Run this site? Remove or correct this report.
Checked Nov 6, 2026, 21:35 UTC
| File | Status | What the robot saw | Same since |
|---|---|---|---|
| ads.txt | ADDED | 21 seller lines, 16 ad systems. 1 change on Nov 6. See the change | 2026-11-06 |
| app-ads.txt | SUCCESS | 30 seller lines, 25 ad systems. | 2026-11-03, first check |
| sellers.json | SUCCESS | 1 seller listed. 1 line has no matching seller at google.com. 14 lines not judged: the ad system's sellers.json could not be read. | 2026-11-05, first check |
| robots.txt | SUCCESS | 7 rules for 7 AI crawlers. Blocks ClaudeBot, anthropic-ai, Google-Extended, CCBot, and 3 more. | 2026-11-06, first check |
| llms.txt | NOT_FOUND | Not found. The site answered 404. | 2026-11-06, first check |
| DMARC | SUCCESS | p=quarantine. Reports on. | 2026-11-06, first check |
| MTA-STS | RESTRICTED | The site turned the robot away. No good check yet. | |
| BIMI | SUCCESS | Logo record published. | 2026-11-06, first check |
| security.txt | SUCCESS | Contact: https://hackerone.com/automattic/reports/new. No expiry date. | 2026-11-06, first check |
1 change since Oct 31
ads.txt sellers on Nov 6.
See before and after
tumblr.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.