HProxy · Network block
Free proxies in 3.99.158.0/24 2026
Every proxy below sits in the 3.99.158.0/24 block, on an address starting 3.99.158. The list is re-verified every few minutes, each IP checked live for uptime, speed and anonymity, then geolocated. Click any IP for its live status.
Showing only proxies in the block 3.99.158.0/24. The filters below search inside this block.
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3.99.158.0/24 proxies right now, by the numbers
The pool currently holds 134 3.99.158.0/24 proxies spread across 1 network. They respond in 425ms at the median, much quicker than the 1614ms median across the whole free pool. The busiest exits are Montreal. These figures come straight from the live pool and move every few minutes as proxies are re-verified.
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About these 3.99.158.0/24 proxies
These are public proxies gathered from across the web and continuously re-verified by HProxy's engine. They're free and fine for quick, low-stakes tasks. But like all public proxies they're shared, go down without warning, and are often already blocked by major sites. Always test before you rely on one.
Run any list through our free checker to see which proxies are alive, fast and anonymous right now.
Open the free proxy checkerAbout free proxies in 3.99.158.0/24
Free proxies in 3.99.158.0/24 are public proxy servers whose addresses all begin 3.99.158, meaning they share the same /24 block on Amazon. This page keeps a live-checked list of them rather than a stale dump: every address here was seen running an open proxy and was responding when it was last verified, so instead of guessing which addresses in the range are usable, you get the ones that actually answered.
Open proxies cluster in blocks like this one because of how they are found. Scanners sweep whole ranges at a time, so an address that turns up an open proxy usually sits next to others that do too, which is why looking at a /24 tells you more than any single address in it. A block with proxies today tends to keep producing them.
What is the 3.99.158.0/24 block?
A /24 is a block of 256 consecutive IP addresses that share their first three octets, here 3.99.158.0 through 3.99.158.255. Networks are handed out and routed in blocks like this, so the addresses in one /24 almost always belong to the same operator and behave alike. When several proxies appear in one block, they are typically the same kind of machine on the same network.
How to use these 3.99.158.0/24 proxies
Pick an entry from the table and set its IP and port in your browser or client, matching the protocol shown. Test it against a page that echoes your address before you rely on it, and click any IP for its full live record. Because these share a block, they also tend to share a reputation: a site that has flagged one address in the range may treat the others the same way.
Free proxies churn whatever block they sit in, so pull several and rotate. If the whole 3.99.158.0/24 range goes quiet, it usually comes back together too, which is why we keep re-testing every address in it.
Free block proxies vs paid proxies
A free proxy in 3.99.158.0/24 costs nothing and is fine for research and one-off checks, but the addresses are public, shared and unstable, and a whole block can share a bad reputation. For anything repeatable that adds up fast.
HProxy's paid residential, ISP, mobile and datacenter proxies give you clean addresses with real uptime, billed by the gigabyte with no subscription. Keep the free 3.99.158.0/24 list for research and reach for paid the moment a task has to succeed.
Frequently asked
What are 3.99.158.0/24 proxies?
Public proxy servers whose IP addresses all sit in the 3.99.158.0/24 block (they begin 3.99.158). This page lists the ones currently in the HProxy pool that answered at their last live check.
Why do proxies cluster in one block?
Because open proxies are found by scanning ranges. A scanner that sweeps 3.99.158.0/24 and finds one open proxy usually finds several, since they tend to be the same kind of machine on the same network. That is why a block page shows more than any single address in it.
Are these 3.99.158.0/24 proxies free?
Yes, free to copy and use with no signup, gathered from public sources. Free means shared and unstable, so verify an entry right before you rely on it.
How often is this list updated?
Continuously. Every address in the block is re-verified on a rolling cycle; one that stops answering moves out of the live list and returns the moment it answers again.
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Free IPs are shared and rotate out fast, so success rates swing. The paid network gives you dedicated-clean pools that hold up under load.
About this list & IP removal
Every proxy here is aggregated from publicly available sources. We do not scan or collect these IP addresses ourselves: we verify entries that are already public (live status, latency, uptime) and store nothing else about the devices behind them. The list is provided as-is, with no warranty, for lawful use only, on the basis of our legitimate interest in a free, transparent proxy directory (Art. 6 (1) (f) GDPR). Never route passwords or sensitive data through a public proxy. If an IP address is yours and you'd like it removed, email legal@hproxy.com and we'll take it down (Art. 21 GDPR). Full details on the report abuse page.