What is a Subnet?

A subnet (subnetwork) is a logically segmented portion of a larger network, identified by a common network prefix in the IP addresses. In proxy contexts, subnet diversity refers to how many different subnets the proxy pool spans, which directly impacts detection resistance.

Subnets, Prefixes, and Block Risk

IP addresses within the same subnet share a common prefix. For example, 192.168.1.10 and 192.168.1.200 share the /24 subnet 192.168.1.0/24. The subnet mask or CIDR notation defines how many bits represent the network portion versus the host portion. In proxy terms, websites can identify related IPs by their subnet. If multiple proxy IPs share a /24 subnet (same first three octets), a target website can block the entire subnet after detecting suspicious activity from any single IP in that range.

If five of your requests through gate.hexproxies.com:8080 all exit from IPs in the 45.32.100.x range, a target blocking that /24 subnet knocks out all five. Greater subnet diversity means less correlation between your assigned IPs.

Subnet Diversity as a Quality Metric

Subnet diversity is a critical quality metric for any proxy pool. A pool with thousands of IPs but only a few subnets is far more vulnerable to wholesale blocking than a smaller pool spread across hundreds of subnets. Hex Proxies maintains broad subnet diversity across all proxy products, minimizing the risk that blocking one IP affects others in your allocated pool.

Why It Matters for Proxy Users

Subnet-level blocking is one of the most effective defenses websites deploy. When a target detects abuse from one IP, blocking the entire /24 subnet is a common automated response that takes out 256 IPs at once. If your proxy pool concentrates IPs in a few subnets, a single blocking event can eliminate a significant portion of your available IPs. Requesting subnet diversity information from your provider is a legitimate and important due-diligence question.

**Practical example:** A data collection team discovers that 40 percent of their assigned IPs from a budget proxy provider share just 3 subnets. When one of the target websites blocks a /24 range after detecting aggressive scraping from a single IP, 80 IPs become unusable simultaneously. After migrating to Hex Proxies, where IPs span hundreds of diverse subnets, a single /24 block removes at most 2 to 3 IPs from their active pool, making subnet-level blocking essentially irrelevant to their operations.

To assess your own pool's subnet diversity, extract the first three octets of each assigned IP and count unique values. If you have 100 IPs but only 5 unique /24 prefixes, your pool is concentrated and vulnerable. A well-diversified pool should have at least one unique /24 prefix for every 3 to 5 IPs in the pool.