Is 8.39.228.21:39593 a proxy? Yes.
8.39.228.21:39593 is a public HTTP proxy in the HProxy free proxy list, exiting from United States. It holds a spotty 4% uptime, and was last checked 24 min ago.
uptime
United StatesUptime & downtime
7
Days tracked
311
Checks run
94.9%
Downtime
7
Down days
How this one compares
2,776 checks in, its uptime is ordinary for a free proxy.
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 4,796 proxies answering right now, the middle of the pack answers 14.6% of the checks we send it.
4%
of 2,776 checks answered
Pool median 14.6%. 8.39.228.21:39593 sits below it, which is ordinary for a public proxy.
2,776
real connection attempts
Each one opens a socket and waits up to 90 seconds. Slow and unreachable look identical if you stop listening early.
52
days tracked, still in the live pool
Of the 194,049 free proxies we have watched stop working, half were gone within 28 days of us first seeing them.
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 194,049 endpoints that stopped working.
Middle halfMedianFull range
How quickly one answers
Response time on the last successful check, across the 4,796 proxies answering right now.
Where this address sits
Right now our free pool holds no other free proxies on Visionary Communications LLC, and 878 in United States. 8.39.228.21:39593 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 Visionary Communications LLC
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 54 addresses on AS399869, which is 0.01% 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 before17%
- Never answered83%
- 1LimitedNetwork-ASAS213790227,266
- 2Amazon.com, Inc.AS1650927,448
- 3Cloudflare, Inc.AS1333522,185
- 4SECURED SERVERS LLCAS2045419,475
- 5Cloudflare, Inc.AS20924214,141
- 6Alibaba (US) Technology Co., Ltd.AS4510211,686
- 7GloboTech CommunicationsAS3666611,542
- 8ChinanetAS41348,378
- AS399869 sits outside the 250 largest networks we hold.
How to use this proxy
Route a request through 8.39.228.21:39593 over HTTP. Free proxies are shared and rotate out fast, so test before you rely on it.
curl -x http://8.39.228.21:39593 \
https://api.ipify.org?format=json
Not a terminal person? Pick your device and we walk you through it, nothing assumed.
Continuous monitoring
How HProxy checks 8.39.228.21:39593
8.39.228.21:39593 is in the live pool right now, and it stays there only for as long as it keeps answering.
Port 39593: 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 8.39.228.21:39593 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, which is how we know it spoke HTTP.
2,776 checks, 120 answered
That is 4% of the time, measured since June 23, 2026. Every one of those results, successes and failures alike, is a connection HProxy opened itself.
It is being re-tested continuously
8.39.228.21:39593 is in the live rotation, so it is re-tested continuously rather than on a daily cycle. If it stops answering it is marked down immediately, and if it stays down for 3 days it moves into the public proxy database with its full record intact. Nothing is deleted at any point.
This endpoint
The record
Everything HProxy holds on 8.39.228.21:39593, and nothing it does not.
- First seen
- June 23, 2026
- Last checked
- August 14, 2026
- Next check due
- continuously
- Checks run
- 2,776
- Times it answered
- 120
- Spoke
- HTTP
4%
answered 120 of 2,776 checks
Questions about 8.39.228.21:39593
Is 8.39.228.21:39593 a working proxy right now?
Yes. 8.39.228.21:39593 answered HProxy's automated check 24 min ago and is in the live free proxy pool as we publish this page. It is re-tested every few minutes, so open this page again for its current state rather than trusting a copy of it.
What kind of proxy is 8.39.228.21?
It speaks HTTP. The port is 39593. Point your client at 8.39.228.21:39593 over http to route a request through it.
Where is 8.39.228.21 located?
Traffic through it exits from Black Hawk, United States, on Visionary Communications LLC (AS399869). That is where the destination site will think your request came from.
How reliable has 8.39.228.21:39593 been?
Across 53 days of tracking it answered 4% of our checks. The chart on this page shows every day we have recorded for it, including the days it was down.
Is it safe to use 8.39.228.21:39593?
Treat it the way you would any public proxy: it is operated by someone we have no relationship with, it is shared with strangers, and anything you send unencrypted over it can be read. Fine for a quick geo check or a scrape of public data, never for logins, payments or anything private.
How many free proxies are on Visionary Communications LLC?
None other than 8.39.228.21:39593 at the moment. AS399869 (Visionary Communications LLC) has no other free proxies live in our pool right now, though that changes as we re-verify.
Are there other free proxies in United States?
Yes, 878 free proxies are exiting from United States in our pool right now, answering in 2991ms 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
Free proxies fail. This is what that looks like.
8.39.228.21:39593 answers 4% of the time, and that is ordinary for a public proxy. Nothing here is a service anybody sells you, which is why the numbers swing and why the list turns over constantly.
Other live free proxies
View all →34.207.102.197:8090
HTTP · United States · 25% · 323ms
18.188.53.175:37615
HTTPS · United States · 13% · 359ms
18.191.250.90:45053
HTTPS · United States · 11% · 401ms
18.222.132.180:3128
SOCKS4 · United States · 15% · 404ms
34.207.239.230:3504
HTTPS · United States · 13% · 409ms
159.65.230.46:8888
HTTP · United States · 51% · 442ms
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.