csdn.net
As of Nov 6, 2026, csdn.net's DMARC policy is quarantine.
Checked daily since Nov 6, 2026. JSON. Link to this check. Run this site? Remove or correct this report.
Checked Nov 6, 2026, 18:11 UTC
| File | Status | What the robot saw | Same since |
|---|---|---|---|
| ads.txt | UNAVAILABLE | Server error 521. No good check yet. UNAVAILABLE, NOT AN ABSENCE | |
| app-ads.txt | UNAVAILABLE | Server error 521. No good check yet. UNAVAILABLE, NOT AN ABSENCE | |
| sellers.json | UNAVAILABLE | Server error 521. No good check yet. UNAVAILABLE, NOT AN ABSENCE | |
| robots.txt | SUCCESS | Read. No rule names an AI crawler. | 2026-11-06, first check |
| llms.txt | UNAVAILABLE | Server error 521. No good check yet. UNAVAILABLE, NOT AN ABSENCE | |
| DMARC | SUCCESS | p=quarantine. Reports on. | 2026-11-06, first check |
| MTA-STS | NOT_FOUND | No MTA-STS record. | 2026-11-06, first check |
| BIMI | NOT_FOUND | No BIMI record. | 2026-11-06, first check |
| security.txt | UNAVAILABLE | Server error 521. No good check yet. UNAVAILABLE, NOT AN ABSENCE |
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
| udmserve.net | REMOVED | Dropped sellers.json seller: 4499 | 00:21 UTC |
| udmserve.net | ADDED | New sellers.json seller: 3968 | 00:21 UTC |
| 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 |