https://arstechnica.com/gadgets/2021/08/netflix-is-adding-residential-ip-addresses-to-its-vpn-blocklists/

Netflix blocks known commercial VPNs and proxies from accessing its services in order to preserve its geofencing—partitioning access to content based on a user's real-world location. Users who connect to a commercial VPN or proxy provider endpoint in another country can access content licensed for viewing in the endpoint country—but not in the viewer's own.

Recently, as reported by TorrentFreak, Netflix began including putatively residential IP subnets in its blocklists.