Is 37.230.57.131:999 a proxy? Yes, it was.
37.230.57.131:999 was a public proxy in the HProxy free proxy pool, exiting from Paraguay on ARANDA CARDOZO LIDER RAMON. Across 767 checks it answered 16% of the time, and it has since gone dark (last answered August 27, 2026), so it is not a usable proxy right now.
across all 767 checks
ParaguayHow this one compares
It worked sometimes, for 42 days, and then it stopped.
Every free proxy list quotes an uptime figure. Almost none of them tell you what a normal one looks like, so here is ours: across the 6,688 proxies answering right now, the middle of the pack answers 25.3% of the checks we send it.
16%
of 767 checks answered
Pool median 25.3%. 37.230.57.131:999 sits below it, which is ordinary for a public proxy.
767
real connection attempts
Each one opens a socket and waits up to 90 seconds. Slow and unreachable look identical if you stop listening early.
42
days from first sighting to last answer
Of the 277,752 free proxies we have watched stop working, half were gone within 26 days of us first seeing them.
July 16, 2026
First listed by our sources
Published as a working proxy by 42 of the public lists HProxy tracks. Being listed is a claim, not a test.
August 27, 2026
Stopped answering
It answered our checks for 42 days before it went quiet.
August 30, 2026
Moved to the permanent record
It left the live pool here. Nothing is deleted: the address keeps this page and stays in the re-check rotation.
September 12, 2026
Most recent re-test
HProxy has opened 767 real connections to this endpoint in total. The sweep reaches every address in the database roughly once every 12 hours.
What normal looks like
Every number above is measured against these two.
A percentage on a proxy list means nothing without the shape of the thing it came from. These are the two distributions the rest of this page compares against, drawn from HProxy's own checks rather than from anybody's marketing page.
How long one lasts
Days from the first time we saw an address to the last time it answered, across 277,752 endpoints that stopped working.
Middle halfMedianFull range
How quickly one answers
Response time on the last successful check, across the 6,688 proxies answering right now.
Continuous monitoring
How HProxy checks 37.230.57.131:999
HProxy has checked 37.230.57.131:999 767 times and it answered 119 of those. Every one of those was a real connection attempt, never a lookup.
42 public sources published it
37.230.57.131 appears in 42 of the public proxy sources HProxy tracks. Lists copy from each other constantly, so an address showing up in many of them says a lot about how widely it was republished and very little about whether it ever worked.
Port 999: System port
Ports below 1024 are protected. On most systems you need administrator rights to open one at all. So whatever is answering here was set up by someone with full control of that machine, not by some ordinary program that happened to be running.
Every check is a real connection
HProxy does not read this address off somebody else's list and pass it on. Each check opens a real connection to 37.230.57.131:999 and gives it up to 90 seconds to answer. Slow is not the same as unreachable, and plenty of working proxies take half a minute to reply. Anything that does not answer in that budget counts as a failure and is recorded as one, which is why the percentage on this page moves rather than sitting at a marketing number. The handshake is attempted across HTTP, HTTPS, SOCKS4 and SOCKS5, so a proxy is never missed because we guessed the wrong protocol.
767 checks, 119 answered
That is 16% of the time, measured since July 16, 2026. Every one of those results, successes and failures alike, is a connection HProxy opened itself.
We are still watching for it to come back
Being archived does not stop the testing. 37.230.57.131:999 answered before, so it is exactly the kind of address that can return, and the sweep works through the whole database and reaches every address roughly once every 12 hours. Its last check was on September 12, 2026, so the next one is due within a day of that. The moment it answers again it is promoted straight back into the live free proxy list, automatically, with no manual step.
This endpoint
The record
Everything HProxy holds on 37.230.57.131:999, and nothing it does not.
- First seen
- July 16, 2026
- Last checked
- September 12, 2026
- Next check due
- within 12 hours
- Checks run
- 767
- Times it answered
- 119
- Stopped answering
- August 27, 2026
16%
answered 119 of 767 checks
Live free proxies right now
View allWhere this address sits
Right now our free pool holds 2 other free proxies on Aranda Cardozo, and 45 in Paraguay. 37.230.57.131:999 sits inside that set, so if it is not usable the pages below are where its closest alternatives are.
How many free proxies are on ARANDA CARDOZO LIDER RAMON
Open proxies cluster rather than spreading evenly across the internet. Hosting providers and cloud platforms run enormous numbers of near-identical servers, so a handful of networks end up carrying a disproportionate share of every public proxy list, including ours. HProxy tracks 10 addresses on AS270052, which is 0.00% of every address in the database and a small corner of the database. 2 of them are answering right now, so if this particular address is not usable, the network is a reasonable place to look for one that is.
- Answering now20%
- Answered before60%
- Never answered20%
- 1LimitedNetwork-ASAS213790227,474
- 2SECURED SERVERS LLCAS1943779,187
- 3SECURED SERVERS LLCAS2045447,198
- 4Amazon.com, Inc.AS1650944,510
- 5Cloudflare, Inc.AS1333522,924
- 6M247AS900919,295
- 7Cloudflare, Inc.AS20924214,275
- 8Alibaba (US) Technology Co., Ltd.AS4510212,248
- AS270052 sits outside the 250 largest networks we hold.
Questions about 37.230.57.131:999
Is 37.230.57.131:999 a working proxy?
No, not any more. It was a working public proxy in HProxy's free pool and has since gone dark, last answering on August 27, 2026. We still re-test it periodically in case it returns.
Was 37.230.57.131 ever actually a proxy?
Yes. We ran 767 checks against it and it answered 119 of them, about 16% of the time, over 42 days on our list.
What is the hostname for 37.230.57.131?
37.230.57.131 publishes no reverse DNS record. That is not unusual and it is not suspicious on its own, but it does mean the address volunteers nothing about who runs it, so the network and the check history below are all there is to go on.
Where was 37.230.57.131 hosted?
Ciudad del Este, Alto Parana Department, Paraguay, ARANDA CARDOZO LIDER RAMON (AS270052). It is a datacenter address, not a home connection.
Why keep a page for an address that no longer works?
Because "was this address ever a proxy, and when" is a real question. If you are looking at this IP in a firewall log or an abuse report, the dates and the check counts here are the answer. HProxy's public proxy IP list keeps every address it has ever tracked and carries on re-testing them, so deleting this record would throw all of that away.
How many free proxies are on Aranda Cardozo?
2 other free proxies are live on Aranda Cardozo (AS270052) in our pool right now, alongside 37.230.57.131:999. Networks that host one open proxy usually host several, which is why the whole AS is worth browsing rather than just this address.
Are there other free proxies in Paraguay?
Yes, 45 free proxies are exiting from Paraguay in our pool right now, answering in 6568ms at the median. If this address is not usable, that list is the place to look for a working one.
Where to go next
Upgrade to the paid network
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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.