Datacenter proxy

A datacenter proxy exits from a server in a hosting facility. It is the fastest and cheapest of the kinds you can buy — often a flat monthly price per IP rather than a charge per gigabyte — and it announces itself, because the address ranges belonging to hosting providers are published and any site that cares can look them up. Nothing about this is a defect; it is what the product is.

The practical rule is to match the kind to the job. Fetching public pages at volume is exactly what these are for. Signing into a social or marketplace account from one is a fact the platform will weigh against you before the page has finished loading, and no amount of fingerprint work covers it, because the address is measured outside the browser entirely. Argus badges a datacenter exit rather than blocking it — it is a fact to weigh, not automatically a failure — and names the provider running it, so a pool sold to you as residential that answers from hosting is something you find out before a client's account goes behind it. See how proxies work in Argus for the health check that reports it.