Three criteria defining the top purity tier for native static residential IPs—direct ISP issuance, AS-geo consistency, and cross-database residential tagging—with a five-tier hierarchy for benchmarking.
Stop comparing residential proxy providers on IP pool size alone. Region, ISP, and purity are the three layered filters that actually determine whether an IP works for your task — and what to ask during selection to verify each one
Overseas proxy IP selection has evolved from three simple criteria to 8–10 decision variables spanning IP subtypes, protocols, billing models, regional compliance, and ASN purity.