How residential proxies work
These proxy networks are made up of real devices on real home connections. The home users usually join in one of two ways: through an opt-in SDK (a small piece of code) bundled into a free app — they agree to share some bandwidth so the app stays free — or through a paid program that pays them to share. When your scraper makes a request, it goes to the provider's gateway (their entry point). The gateway picks an available home device that matches your location and rotation settings, and that device forwards the request to the target site over its own home connection. The site then sees a home IP — no datacenter ASN (the network ID that marks an address as belonging to a hosting company), no known proxy range, nothing obvious to flag. The trade-off: each request takes an extra hop through a possibly-slow home line, so it's slower — but the IP looks far more trustworthy.
When residential proxies are the right tool
Reach for residential proxies when the target site blocks or rate-limits datacenter IPs, when you need to appear in a specific country or city, or when you need to confirm that a real visitor sees the same thing your scraper does. The most common use cases are e-commerce, travel, social media, sneaker drops, ad verification, and SEO research. Skip them when plain datacenter IPs already work — residential proxies cost 10–50x more per GB, and you pay by bandwidth used, not by number of requests. That means an image-heavy page can cost a lot more than a simple text-only API call.
Ethical and legal concerns
Where the home IPs come from has long been a sore point. Some networks grew their pools through SDKs bundled into apps where users never really understood they were sharing their connection. Recent FTC actions and changes to app-store policies have pushed the industry toward clearer, genuine opt-in. Reputable providers now explain how they recruit the people sharing their connections (their "peers") and let those people opt out. As a buyer, favor providers that document this consent and have a solid track record. And remember that the IP doing your scraping belongs to a real person whose connection sits in the middle of every request — so keep your request rates polite.