According to https://lookup.icann.org/lookup both glean and reactjs have Cloudfl...

		mcintyre1994 on Oct 4, 2021 \| parent \| context \| favorite \| on: Facebook-owned sites were down According to https://lookup.icann.org/lookup both glean and reactjs have Cloudflare nameservers. fbinfer has ns.facebook.com nameservers which are presumably down.