Today, as e-commerce, data scraping, and social media account management become increasingly common, proxies have become a core part of modern online infrastructure. However, many users face the same question when purchasing proxies: platforms often offer both “IPv4 proxies” and “IPv6 proxies,” with different prices and descriptions — so which one should you choose?

This article provides a complete decision-making guide, covering definitions, differences, selection criteria, and real-world use cases.

I. What Are IPv4 Proxies and IPv6 Proxies?

1.IPv4 Proxy

An IPv4 address consists of four groups of numbers ranging from 0–255 (such as 190.162.217.140), with a theoretical maximum of about 4.29 billion unique addresses.…