Is 143.89.247.135:7892 a proxy? Yes, it was.
143.89.247.135:7892 was a public proxy in the HProxy free proxy pool, exiting from Hong Kong SAR China on Hong Kong University of Science and Technology. Across 481 checks it answered 6% of the time, and it has since gone dark (last answered June 29, 2026), so it is not a usable proxy right now.
across all 481 checks
Hong Kong SAR ChinaUptime & downtime
8
Days tracked
192
Checks run
25%
Downtime
5
Down days
How this one compares
It worked sometimes, for 5 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 5,074 proxies answering right now, the middle of the pack answers 14.7% of the checks we send it.
6%
of 481 checks answered
Pool median 14.7%. 143.89.247.135:7892 sits below it, which is ordinary for a public proxy.
481
real connection attempts
Each one opens a socket and waits up to 90 seconds. Slow and unreachable look identical if you stop listening early.
5
days from first sighting to last answer
Of the 194,043 free proxies we have watched stop working, half were gone within 28 days of us first seeing them.
June 24, 2026
First listed by our sources
Published as a working proxy by 51 of the public lists HProxy tracks. Being listed is a claim, not a test.
June 29, 2026
Stopped answering
It answered our checks for 5 days before it went quiet.
July 2, 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.
August 14, 2026
Most recent re-test
HProxy has opened 481 real connections to this endpoint in total. The sweep reaches every address in the database roughly once every 24 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 194,043 endpoints that stopped working.
Middle halfMedianFull range
How quickly one answers
Response time on the last successful check, across the 5,074 proxies answering right now.
Continuous monitoring
How HProxy checks 143.89.247.135:7892
HProxy has checked 143.89.247.135:7892 481 times and it answered 29 of those. Every one of those was a real connection attempt, never a lookup.
51 public sources published it
143.89.247.135 appears in 51 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 7892: Registered port range
This port sits in the middle range, where any ordinary program can listen without special permission. The number itself carries no reserved meaning, which tells you somebody picked it on purpose instead of accepting a default.
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 143.89.247.135:7892 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.
481 checks, 29 answered
That is 6% of the time, measured since June 24, 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. 143.89.247.135:7892 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 24 hours. Its last check was on August 14, 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 143.89.247.135:7892, and nothing it does not.
- First seen
- June 24, 2026
- Last checked
- August 14, 2026
- Next check due
- within 24 hours
- Checks run
- 481
- Times it answered
- 29
- Stopped answering
- June 29, 2026
6%
answered 29 of 481 checks
Live free proxies right now
View all →18.163.33.4:39777
HTTPS · Hong Kong SAR China · 16% · 715ms
43.199.29.225:2555
SOCKS4 · Hong Kong SAR China · 12% · 725ms
43.198.209.12:11071
SOCKS4 · Hong Kong SAR China · 15% · 729ms
43.198.22.151:33972
HTTPS · Hong Kong SAR China · 13% · 735ms
18.162.200.96:14089
SOCKS4 · Hong Kong SAR China · 14% · 738ms
43.99.100.108:3128
HTTP · Hong Kong SAR China · 95% · 753ms
Where this address sits
Right now our free pool holds no other free proxies on Hong Kong University of Science and Technology, and 374 in Hong Kong SAR China. 143.89.247.135:7892 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 Hong Kong University of Science and Technology
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 3 addresses on AS3363, which is 0.00% of every address in the database and a small corner of the database. None of them are answering at the moment, though every one stays in the re-check rotation in case that changes.
- Answered before33%
- Never answered67%
- 1LimitedNetwork-ASAS213790227,266
- 2Amazon.com, Inc.AS1650927,447
- 3Cloudflare, Inc.AS1333522,185
- 4SECURED SERVERS LLCAS2045419,475
- 5Cloudflare, Inc.AS20924214,141
- 6Alibaba (US) Technology Co., Ltd.AS4510211,686
- 7GloboTech CommunicationsAS3666611,542
- 8ChinanetAS41348,378
- AS3363 sits outside the 250 largest networks we hold.
Questions about 143.89.247.135:7892
Is 143.89.247.135:7892 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 June 29, 2026. We still re-test it periodically in case it returns.
Was 143.89.247.135 ever actually a proxy?
Yes. We ran 481 checks against it and it answered 29 of them, about 6% of the time, over 5 days on our list.
What is the hostname for 143.89.247.135?
Its reverse DNS record is dy247-135.ce.ust.hk. That is what the address itself publishes about who operates it, which is often more telling than the network name: hosting providers name their machines by region and instance type, and a residential line usually carries its ISP's own pattern.
Where was 143.89.247.135 hosted?
New Territories, Hong Kong SAR China, Hong Kong University of Science and Technology (AS3363). It is a residential or ISP address rather than a datacenter one.
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 Hong Kong University of Science and Technology?
None other than 143.89.247.135:7892 at the moment. AS3363 (Hong Kong University of Science and Technology) has no other free proxies live in our pool right now, though that changes as we re-verify.
Are there other free proxies in Hong Kong SAR China?
Yes, 374 free proxies are exiting from Hong Kong SAR China in our pool right now, answering in 1148ms 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.