Is 131.153.163.141:33537 a proxy? Yes.
131.153.163.141:33537 is a public HTTP proxy in the HProxy free proxy list, exiting from United States. It holds a spotty 9% uptime, and was last checked 8 h ago.
uptime
Other ports on this IP
131.153.163.141 is answering on 2,566 ports right now.
Ports like this one rarely travel alone. We hold 5,298 of them on 131.153.163.141 and have run 140,976 checks against them since September 2, 2026. When an address turns up on public lists across this many ports, each port is published as its own entry, so each one gets its own record here.
Best responding ports
Best on this IP is 131.153.163.141:37598 at 33.9% across 59 checks
| Port | Uptime | Answered | Status |
|---|---|---|---|
| 37598 | 33.9% | 20 / 59 | In the live pool |
| 33864 | 30.5% | 18 / 59 | In the live pool |
| 30177 | 29.3% | 17 / 58 | In the live pool |
| 30269 | 27.6% | 16 / 58 | In the live pool |
| 35917 | 27.6% | 16 / 58 | In the live pool |
| 38400 | 27.6% | 16 / 58 | In the live pool |
| 37549 | 27.1% | 16 / 59 | In the live pool |
| 30551 | 24.6% | 14 / 57 | In the live pool |
| 32621 | 24.1% | 14 / 58 | In the live pool |
| 36490 | 24.1% | 14 / 58 | In the live pool |
| 37961 | 24.1% | 14 / 58 | In the live pool |
| 30017 | 23.7% | 14 / 59 | In the live pool |
How this one compares
56 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 11,671 proxies answering right now, the middle of the pack answers 32.5% of the checks we send it.
9%
of 56 checks answered
Pool median 32.5%. 131.153.163.141:33537 sits below it, which is ordinary for a public proxy.
56
real connection attempts
Each one opens a socket and waits up to 90 seconds. Slow and unreachable look identical if you stop listening early.
1
days tracked, still in the live pool
Of the 208,880 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 208,880 endpoints that stopped working.
Middle halfMedianFull range
How quickly one answers
Response time on the last successful check, across the 11,671 proxies answering right now.
Where this address sits
Right now our free pool holds no other free proxies on SECURED SERVERS LLC, and 22,645 in United States. 131.153.163.141:33537 sits inside that set, so if it is not usable the pages below are where its closest alternatives are.
SECURED SERVERS LLC is the 2nd 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 79,185 addresses on AS19437, which is 10.5% of every address in the database and one of the largest single concentrations in the entire database. That makes it the 2nd 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 before34%
- Never answered66%
- 1LimitedNetwork-ASAS213790227,474
- 2SECURED SERVERS LLCAS1943779,185
- 3SECURED SERVERS LLCAS2045440,917
- 4Amazon.com, Inc.AS1650939,786
- 5Cloudflare, Inc.AS1333522,904
- 6M247AS900917,999
- 7Cloudflare, Inc.AS20924214,269
- 8Alibaba (US) Technology Co., Ltd.AS4510212,208
How to use this proxy
Route a request through 131.153.163.141:33537 over HTTP. Free proxies are shared and rotate out fast, so test before you rely on it.
curl -x http://131.153.163.141:33537 \
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 131.153.163.141:33537
131.153.163.141:33537 is in the live pool right now, and it stays there only for as long as it keeps answering.
Port 33537: 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 131.153.163.141:33537 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.
56 checks, 5 answered
That is 9% of the time, measured since September 2, 2026. Every one of those results, successes and failures alike, is a connection HProxy opened itself.
It is being re-tested continuously
131.153.163.141:33537 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 131.153.163.141:33537, and nothing it does not.
- First seen
- September 2, 2026
- Last checked
- September 3, 2026
- Next check due
- continuously
- Checks run
- 56
- Times it answered
- 5
- Spoke
- HTTP
9%
answered 5 of 56 checks
Questions about 131.153.163.141:33537
Is 131.153.163.141:33537 a working proxy right now?
Yes. 131.153.163.141:33537 answered HProxy's automated check 8 h 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 131.153.163.141?
It speaks HTTP. The port is 33537. Point your client at 131.153.163.141:33537 over http to route a request through it.
Where is 131.153.163.141 located?
Traffic through it exits from Ashburn, United States, on SECURED SERVERS LLC (AS19437). That is where the destination site will think your request came from.
How reliable has 131.153.163.141:33537 been?
Across 2 days of tracking it answered 9% 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 131.153.163.141:33537?
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 SECURED SERVERS LLC?
None other than 131.153.163.141:33537 at the moment. AS19437 (SECURED SERVERS 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, 22,645 free proxies are exiting from United States in our pool right now, answering in 1419ms 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.
131.153.163.141:33537 answers 9% 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
3.95.63.11:21063
SOCKS4 · United States · 86% · 275ms
98.94.14.234:36508
HTTP · United States · 71% · 275ms
54.211.208.156:42475
SOCKS4 · United States · 92% · 277ms
100.61.113.24:12345
HTTPS · United States · 74% · 278ms
18.208.195.229:32785
HTTPS · United States · 81% · 283ms
52.207.237.127:5132
SOCKS4 · United States · 81% · 285ms
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.