Explained
A datacenter proxy routes your internet traffic through an IP address owned by a cloud-hosting or datacenter provider (AWS, Google Cloud, OVH, DigitalOcean, etc.) rather than by a consumer ISP. The IP itself is registered to a server farm, not to a home or mobile device.
Datacenter IPs are cheap to obtain and offer high speed and large bandwidth, which made them the dominant proxy type a decade ago. The trade-off is detectability: every major anti-bot vendor (Cloudflare, Akamai, PerimeterX, Datadome) maintains comprehensive lists of known datacenter IP ranges and blocks or challenges traffic from them on protected sites.
For most modern data-collection, ad-verification, and brand-protection workloads, datacenter proxies fail at the targets that matter — search engines, e-commerce, social platforms, financial sites. That's why Shifter focuses on residential and ISP (static residential) proxies, which look like genuine consumer traffic and produce dramatically higher success rates on those targets.
How It Works
A datacenter proxy provider rents or owns IP blocks from cloud hosting infrastructure. When you connect to the proxy, your request is forwarded out one of those IPs and the destination site sees that IP. The IP is shared (often hundreds of users share the same pool) or dedicated (assigned only to you), but in either case the IP's WHOIS record points to a hosting provider rather than to a consumer ISP.
Because datacenter IPs come from a small number of hosting providers in known IP ranges, they are trivially identifiable. Anti-bot systems use ASN (Autonomous System Number) lookups to flag traffic as 'datacenter' before the request even reaches the application layer. On most protected sites, you'll hit a CAPTCHA, a challenge page, or a hard block.