Is 138.199.25.13:3904 a proxy? Yes, it was.
138.199.25.13:3904 was a public proxy in the HProxy free proxy pool, exiting from Singapore on CDN77. Across 597 checks it answered 15% of the time, and it has since gone dark (last answered June 25, 2026), so it is not a usable proxy right now.
SingaporeUptime & downtime
10
Days tracked
240
Checks run
28.7%
Downtime
7
Down days
How this one compares
It worked sometimes, for 19 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 4,299 proxies answering right now, the middle of the pack answers 15.5% of the checks we send it.
15%
of 597 checks answered
Pool median 15.5%. 138.199.25.13:3904 sits below it, which is ordinary for a public proxy.
597
real connection attempts
Each one opens a socket and waits up to 90 seconds. Slow and dead look identical if you stop listening early.
19
days from first sighting to last answer
Of the 192,409 free proxies we have watched stop working, half were gone within 28 days of us first seeing them.
June 6, 2026
First listed by our sources
Published as a working proxy by 32 of the public lists HProxy tracks. Being listed is a claim, not a test.
June 25, 2026
Stopped answering
It answered our checks for 19 days before it went quiet.
June 28, 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 9, 2026
Most recent re-test
HProxy has opened 597 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 192,409 endpoints that stopped working.
Middle halfMedianFull range
How quickly one answers
Response time on the last successful check, across the 4,299 proxies answering right now.
Continuous monitoring
How HProxy checks 138.199.25.13:3904
HProxy has checked 138.199.25.13:3904 597 times and it answered 87 of those. Every one of those was a real connection attempt, never a lookup.
32 public sources published it
138.199.25.13 appears in 32 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 3904: 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 138.199.25.13:3904 and gives it up to 90 seconds to answer. Slow is not the same as dead, 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.
597 checks, 87 answered
That is 15% of the time, measured since June 6, 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. 138.199.25.13:3904 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 9, 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 138.199.25.13:3904, and nothing it does not.
- First seen
- June 6, 2026
- Last checked
- August 9, 2026
- Next check due
- within 24 hours
- Checks run
- 597
- Times it answered
- 87
- Stopped answering
- June 25, 2026
15%
answered 87 of 597 checks
Live free proxies right now
View all →Where this address sits
Right now our free pool holds no other free proxies on Cdn77, and 259 in Singapore. 138.199.25.13:3904 sits inside that set, so if it is not usable the pages below are where its closest alternatives are.
CDN77 is the 231st largest source of free proxies we have ever measured.
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 150 addresses on AS60068, which is 0.03% of every address in the database and a small corner of the database. That makes it the 231st largest source of free proxies of every network we have ever seen. None of them are answering at the moment, though every one stays in the re-check rotation in case that changes.
- Answered before5%
- Never answered95%
- 1LimitedNetwork-ASAS213790227,266
- 2Amazon.com, Inc.AS1650925,707
- 3Cloudflare, Inc.AS1333522,185
- 4SECURED SERVERS LLCAS2045419,475
- 5Cloudflare, Inc.AS20924214,136
- 6Alibaba (US) Technology Co., Ltd.AS4510211,648
- 7GloboTech CommunicationsAS3666611,542
- 8ChinanetAS41348,355
222 networks between
231CDN77AS60068150
Questions about 138.199.25.13:3904
Is 138.199.25.13:3904 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 25, 2026. We still re-test it periodically in case it returns.
Was 138.199.25.13 ever actually a proxy?
Yes. We ran 597 checks against it and it answered 87 of them, about 15% of the time, over 19 days on our list.
Where was 138.199.25.13 hosted?
Singapore, CDN77 (AS60068). 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 Cdn77?
None other than 138.199.25.13:3904 at the moment. AS60068 (Cdn77) has no other free proxies live in our pool right now, though that changes as we re-verify.
Are there other free proxies in Singapore?
Yes, 259 free proxies are exiting from Singapore in our pool right now, answering in 2352ms at the median. If this address is not usable, that list is the place to look for a working one.
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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.