A Netflix proxy is a proxy service that lets you verify Netflix's catalog from a target country using a sticky ISP or residential IP registered there. That matters because, due to its licensing agreements, Netflix shows a completely different catalog in every country; the same account sees a very different list of series and films from Türkiye, from Germany and from the US. To see that difference, or to verify the catalog of a particular region, your connection has to look as though it comes from that country.
Why a Datacenter IP Will Not Do: Netflix scores IP reputation aggressively and blocks known datacenter and VPN ranges on the spot with proxy error codes (for example "you seem to be using an unblocker"). It has to see that an IP comes from a real home or mobile line; otherwise playback is refused even while you are signed in.
Why the Sticky Session Matters: While you watch an episode of a series, or crawl and compare a catalog, the IP must not change between requests; otherwise Netflix treats the session as suspicious and asks you to verify again, or drops the connection. That is why, instead of short-lived rotation, the preferred setup is sticky sessions held by ISP proxies or residential proxies — an ISP proxy combines the reliability of a residential IP with the low latency of a datacenter, which makes it stand out in catalog comparison and availability testing in particular.
Real-world use cases include content teams comparing regional catalog differences, agencies auditing licensing and geo-restriction compliance, and QA processes verifying whether a title is live in a given country. We shape our general TV & Streaming Proxy infrastructure around this Netflix-specific need for a sticky identity and region verification. The same sticky-identity approach applies to YouTube proxies and Twitch proxies as well.