Is 16.52.81.236:23812 a proxy? Yes.
16.52.81.236:23812 is a public HTTPS proxy in the HProxy free proxy list, exiting from Canada. It holds a spotty 13% uptime with a reasonable 377ms response time, and was last checked 19 hr ago.
uptime
CanadaOther ports on this IP
16.52.81.236 is answering on 35 ports right now.
Ports like this one rarely travel alone. We hold 219 of them on 16.52.81.236 and have run 523,338 checks against them since June 11, 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 16.52.81.236:9058 at 14.3% across 4,711 checks
| Port | Uptime | Answered | Status |
|---|---|---|---|
| 9058 | 14.3% | 674 / 4,711 | Not responding |
| 25327 | 14.2% | 673 / 4,746 | Not responding |
| 5566 | 14.1% | 657 / 4,665 | Not responding |
| 49219 | 14.0% | 651 / 4,661 | Not responding |
| 1903 | 13.9% | 657 / 4,715 | Not responding |
| 7531 | 13.9% | 644 / 4,629 | Not responding |
| 39394 | 13.8% | 651 / 4,711 | Not responding |
| 7277 | 13.7% | 632 / 4,600 | Not responding |
| 41030 | 13.7% | 647 / 4,711 | Not responding |
| 7125 | 13.6% | 632 / 4,658 | Not responding |
| 15349 | 13.5% | 633 / 4,693 | Not responding |
| 31641 | 13.5% | 637 / 4,729 | Not responding |
How this one compares
3,389 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 5,244 proxies answering right now, the middle of the pack answers 25.3% of the checks we send it.
13%
of 3,389 checks answered
Pool median 25.3%. 16.52.81.236:23812 sits below it, which is ordinary for a public proxy.
377ms
on its last response
Pool median 7,588ms, so this one is roughly 20x quicker than typical.
62
days tracked, still in the live pool
Of the 270,717 free proxies we have watched stop working, half were gone within 26 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 270,717 endpoints that stopped working.
Middle halfMedianFull range
How quickly one answers
Response time on the last successful check, across the 5,244 proxies answering right now.
Where this address sits
Right now our free pool holds 288 other free proxies on Amazon, and 498 in Canada. 16.52.81.236:23812 sits inside that set, so if it is not usable the pages below are where its closest alternatives are. At 377ms it answers faster than the 581ms median for Canada proxies (about 65% of it).
Amazon.com, Inc. is the 4th 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 43,478 addresses on AS16509, which is 5.6% of every address in the database and a substantial share of everything HProxy tracks. That makes it the 4th largest source of free proxies of every network we have ever seen. 289 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 now1%
- Answered before84%
- Never answered16%
- 1LimitedNetwork-ASAS213790227,474
- 2SECURED SERVERS LLCAS1943779,187
- 3SECURED SERVERS LLCAS2045447,155
- 4Amazon.com, Inc.AS1650943,057
- 5Cloudflare, Inc.AS1333522,920
- 6M247AS900918,720
- 7Cloudflare, Inc.AS20924214,272
- 8Alibaba (US) Technology Co., Ltd.AS4510212,239
How to use this proxy
Route a request through 16.52.81.236:23812 over HTTPS. Free proxies are shared and rotate out fast, so test before you rely on it.
curl -x https://16.52.81.236:23812 \
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 16.52.81.236:23812
16.52.81.236:23812 is in the live pool right now, and it stays there only for as long as it keeps answering.
Port 23812: 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 16.52.81.236:23812 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 HTTPS.
3,389 checks, 429 answered
That is 13% of the time, measured since July 9, 2026. Every one of those results, successes and failures alike, is a connection HProxy opened itself.
It is being re-tested continuously
16.52.81.236:23812 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 16.52.81.236:23812, and nothing it does not.
- First seen
- July 9, 2026
- Last checked
- September 9, 2026
- Next check due
- continuously
- Checks run
- 3,389
- Times it answered
- 429
- Spoke
- HTTPS
13%
answered 429 of 3,389 checks
Questions about 16.52.81.236:23812
Is 16.52.81.236:23812 a working proxy right now?
Yes. 16.52.81.236:23812 answered HProxy's automated check 19 hr 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 16.52.81.236?
It speaks HTTPS, and our checks grade it elite. The port is 23812. Point your client at 16.52.81.236:23812 over https to route a request through it.
Where is 16.52.81.236 located?
Traffic through it exits from Montreal, Canada, on Amazon.com, Inc. (AS16509). That is where the destination site will think your request came from.
How fast is 16.52.81.236:23812?
It answered in 377ms on the last check. Free public proxies are shared, so real-world speed varies with how many other people are using it at the same moment.
How reliable has 16.52.81.236:23812 been?
Across 63 days of tracking it answered 13% 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 16.52.81.236:23812?
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 Amazon?
288 other free proxies are live on Amazon (AS16509) in our pool right now, alongside 16.52.81.236:23812. 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 Canada?
Yes, 498 free proxies are exiting from Canada in our pool right now, answering in 581ms 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.
16.52.81.236:23812 answers 13% 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
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.