Microsoft (mcr.microsoft.com)
Microsoft Artifact Registry - dotnet, SQL Server, AKS components, Windows base images.
| Host | Ports | Purpose | |
|---|---|---|---|
| mcr.microsoft.com | 443 | Registry API (manifests, blob requests) | required |
| *.data.mcr.microsoft.com | 443 | Regional CDN data endpoints (redirect targets for layers) | required |
Notes
Layer content comes from regional data endpoints like eastus.data.mcr.microsoft.com or westeurope.data.mcr.microsoft.com. If the firewall cannot do wildcards, Microsoft publishes the regional endpoint list in the mcr-firewall-rules documentation.
Copy-paste
Plain domain list: mcr.txt · JSON: mcr.json · connectivity test: check-mcr.sh
mcr.microsoft.com *.data.mcr.microsoft.com
Verify from inside the network
curl -fsSL https://pullist.d0t.se/check-mcr.sh | sh