Add text for an exception to the Origin Trial subdomain restrictions related to the Public Suffix List [website : main]

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Chris Harrelson (Gerrit)

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Apr 15, 2026, 12:24:54 PM (13 days ago) Apr 15

to blink-api-ow...@chromium.org

Chris Harrelson has uploaded the change for review

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Add text for an exception to the Origin Trial subdomain
restrictions related to the Public Suffix List

Change-Id: Ic2e32f3ecba36622dda753eb6f2b1ed662e186cb

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diff --git a/site/blink/launching-features/index.md b/site/blink/launching-features/index.md
index b01ebfa..db7f3ad 100644
--- a/site/blink/launching-features/index.md
+++ b/site/blink/launching-features/index.md
@@ -357,6 +357,13 @@
 Note that if your plan for shipping involves a gradual ramp-up on Stable channel,
 this is not considered experimentation, and instead follows the usual Intent to Ship process.
 
+Origin trials also have restrictions on the
+[subdomains](https://developer.chrome.com/docs/web-platform/origin-trial-troubleshooting#subdomain) allowed per origin trial
+token. In particular, subdomains cannot be issued for origins in the Public Suffix List.
+If your trial has a clear need for an exception to this rule, you may request
+(with justification) an exception via email to [the API owners](mailto:blink-ap...@chromium.org).
+Approval of the exception requires 3 LGTMs.
+
 An initial origin trial or experiment for a feature may only run for
 *6 milestones of Chromium*. Each request to extend beyond that limit may only be
 for *3 milestones* at a time, and will not be approved unless substantial

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M site/blink/launching-features/index.md

Change size: XS

Delta: 1 file changed, 7 insertions(+), 0 deletions(-)

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chromium-website-scoped@luci-project-accounts.iam.gserviceaccount.com (Gerrit)

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Apr 15, 2026, 12:34:14 PM (13 days ago) Apr 15

to Chris Harrelson, Mike Taylor, Yoav Weiss (@Shopify), chromium-websi...@chops-service-accounts.iam.gserviceaccount.com

chromium-we...@luci-project-accounts.iam.gserviceaccount.com submitted the change

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Commit message:

Add text for an exception to the Origin Trial subdomain
restrictions related to the Public Suffix List

Change-Id: Ic2e32f3ecba36622dda753eb6f2b1ed662e186cb

Reviewed-on: https://chromium-review.googlesource.com/c/website/+/7763303

Reviewed-by: Yoav Weiss (@Shopify) <yoav...@chromium.org>

Reviewed-by: Mike Taylor <mike...@chromium.org>

Commit-Queue: Mike Taylor <mike...@chromium.org>

Files:

M site/blink/launching-features/index.md

Change size: XS

Delta: 1 file changed, 7 insertions(+), 0 deletions(-)

Branch: refs/heads/main

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Code-Review: +1 by Mike Taylor, +1 by Yoav Weiss (@Shopify)

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