diff --git a/docs/network.md b/docs/network.md
index 6d8ff741..83ae3c6a 100644
--- a/docs/network.md
+++ b/docs/network.md
@@ -205,6 +205,7 @@ Available ecosystem identifiers include:
 | `swift` | Swift.org, CocoaPods |
 | `terraform` | HashiCorp releases, Terraform registry |
 | `threat-detection` | Copilot API and telemetry domains used by the Detection stage |
+| `copilot-vendor` | Copilot vendor API/telemetry domains (`api.business.githubcopilot.com`, `api.enterprise.githubcopilot.com`, `api.individual.githubcopilot.com`, `telemetry.enterprise.githubcopilot.com`) |
 
 **Compound identifier** (expands to a union of component identifiers):