Choosing a residential proxy provider for web scraping comes down to a few practical dimensions: IP pool size and geographic spread, session control, protocol support, pricing structure, and whether the provider owns its supply chain or rents it from someone else. Each of these affects your scraping reliability and your cost per successful request — and they don't all move in the same direction.
Here is what to evaluate, and why each dimension matters.
Residential IPs are sourced from real consumer devices, which means they look legitimate to target sites. The size of the pool matters because a small pool gets exhausted quickly — the same IPs show up repeatedly, triggering rate limits or bans. For most web scraping use cases, you want a network that spans at least 100 countries and carries millions of active IPs, not tens of thousands. Geographic spread matters if your scraping targets region-locked content, local SERPs, or pricing that varies by market. A network covering 140+ countries gives you the flexibility to source IPs close to the target server without routing through high-latency paths.
Not all scraping workflows want a fresh IP on every request. Multi-step scrapes — login flows, cart interactions, paginated crawls — require holding the same IP across several sequential requests. Sticky sessions solve this by reserving a single IP for a configurable window, typically up to 30 minutes. Default rotating endpoints give you a fresh IP per request, which is what you want for high-volume, stateless scraping. A good provider gives you both modes via the same endpoint, controlled by a session parameter, rather than forcing you to manage separate pools.
HTTP proxies cover most scraping scenarios. SOCKS5 support matters when you are proxying at the socket level — streaming data, non-HTTP protocols, or tooling that expects SOCKS5 natively. Providers that support both HTTP and SOCKS5 on the same endpoints reduce integration complexity. Credential-based authentication via a username/password pattern is standard and compatible with most scraping libraries without additional configuration.