Network & TLS
HSTS preload status
Domain registered in browsers’ pre-shipped HTTPS-only list.
Healthy
preloaded
Checked 5/30/2026, 4:00:55 PM · Source: Scheduled probe
Domain is in the HSTS preload list shipped with all major browsers. Browsers force HTTPS for every connection, even the first one.
What this check means
Our domain is registered in the HSTS preload list shipped with all major browsers. This means browsers force HTTPS for every connection, even the very first one — eliminating a class of downgrade attacks at the network layer.
Recent runs
| When | Result | Source | |
|---|---|---|---|
| 5/30/2026, 4:00:55 PM | preloaded | Scheduled probe | |
| 5/30/2026, 3:00:52 PM | preloaded | Scheduled probe | |
| 5/30/2026, 2:00:53 PM | preloaded | Scheduled probe | |
| 5/30/2026, 1:00:49 PM | preloaded | Scheduled probe | |
| 5/30/2026, 12:00:50 PM | preloaded | Scheduled probe | |
| 5/30/2026, 11:01:09 AM | preloaded | Scheduled probe | |
| 5/30/2026, 10:01:11 AM | preloaded | Scheduled probe | |
| 5/30/2026, 9:01:11 AM | preloaded | Scheduled probe | |
| 5/30/2026, 8:01:12 AM | submitted, awaiting Chromium review | Scheduled probe | |
| 5/30/2026, 7:01:11 AM | submitted, awaiting Chromium review | Scheduled probe | |
| 5/30/2026, 6:01:11 AM | submitted, awaiting Chromium review | Scheduled probe | |
| 5/30/2026, 5:01:09 AM | submitted, awaiting Chromium review | Scheduled probe | |
| 5/30/2026, 4:01:11 AM | submitted, awaiting Chromium review | Scheduled probe | |
| 5/30/2026, 3:01:11 AM | submitted, awaiting Chromium review | Scheduled probe | |
| 5/30/2026, 2:01:12 AM | submitted, awaiting Chromium review | Scheduled probe | |
| 5/30/2026, 1:01:10 AM | submitted, awaiting Chromium review | Scheduled probe | |
| 5/30/2026, 12:01:10 AM | submitted, awaiting Chromium review | Scheduled probe | |
| 5/29/2026, 11:01:09 PM | submitted, awaiting Chromium review | Scheduled probe | |
| 5/29/2026, 10:01:11 PM | submitted, awaiting Chromium review | Scheduled probe | |
| 5/29/2026, 9:01:13 PM | submitted, awaiting Chromium review | Scheduled probe | |
| 5/29/2026, 8:01:09 PM | submitted, awaiting Chromium review | Scheduled probe | |
| 5/29/2026, 7:00:59 PM | submitted, awaiting Chromium review | Scheduled probe | |
| 5/29/2026, 6:00:59 PM | submitted, awaiting Chromium review | Scheduled probe | |
| 5/29/2026, 5:01:02 PM | submitted, awaiting Chromium review | Scheduled probe | |
| 5/29/2026, 4:01:00 PM | submitted, awaiting Chromium review | Scheduled probe | |
| 5/29/2026, 3:01:01 PM | submitted, awaiting Chromium review | Scheduled probe | |
| 5/29/2026, 2:01:02 PM | submitted, awaiting Chromium review | Scheduled probe | |
| 5/29/2026, 1:01:01 PM | submitted, awaiting Chromium review | Scheduled probe | |
| 5/29/2026, 12:01:01 PM | submitted, awaiting Chromium review | Scheduled probe | |
| 5/29/2026, 11:01:00 AM | submitted, awaiting Chromium review | Scheduled probe |
Need additional detail (sanitised report, supporting evidence)? security@theartofcto.com