Is 13.208.166.217:17523 a proxy? Yes.
13.208.166.217:17523 is a public HTTPS proxy in the HProxy free proxy list, exiting from Japan. It holds an excellent 100% uptime with a high 950ms response time, and was last checked 2 h ago.
uptime
JapanUptime & downtime
1
Days tracked
1
Checks run
0%
Downtime
0
Down days
Other ports on this IP
13.208.166.217 is answering on 211 ports right now.
Ports like this one rarely travel alone. We hold 218 of them on 13.208.166.217 and have run 422,943 checks against them since May 13, 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 13.208.166.217:22328 at 17.2% across 3,387 checks
| Port | Uptime | Answered | Status |
|---|---|---|---|
| 22328 | 17.2% | 584 / 3,387 | In the live pool |
| 25780 | 17.1% | 582 / 3,399 | In the live pool |
| 12771 | 17.0% | 576 / 3,382 | In the live pool |
| 443 | 17.0% | 573 / 3,377 | In the live pool |
| 45927 | 16.9% | 582 / 3,434 | In the live pool |
| 4956 | 16.8% | 567 / 3,383 | In the live pool |
| 51317 | 16.7% | 566 / 3,381 | In the live pool |
| 18790 | 16.6% | 563 / 3,388 | In the live pool |
| 59661 | 16.6% | 594 / 3,577 | In the live pool |
| 8777 | 16.6% | 558 / 3,363 | In the live pool |
| 58527 | 16.5% | 560 / 3,387 | In the live pool |
| 45709 | 16.3% | 555 / 3,397 | In the live pool |
How this one compares
Reliable enough to sit in the top 5% of everything we are watching.
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 10,301 proxies answering right now, the middle of the pack answers 13.8% of the checks we send it.
100%
of 1 checks answered
Pool median 13.8%. 13.208.166.217:17523 is in the top 5%.
950ms
on its last response
Pool median 1,639ms, so this one is roughly 2x quicker than typical.
0
days tracked, still in the live pool
Of the 193,304 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 193,304 endpoints that stopped working.
Middle halfMedianFull range
How quickly one answers
Response time on the last successful check, across the 10,301 proxies answering right now.
Where this address sits
Right now our free pool holds 6,381 other free proxies on Amazon, and 580 in Japan. 13.208.166.217:17523 sits inside that set, so if it is not usable the pages below are where its closest alternatives are. At 950ms it answers faster than the 1156ms median for Japan proxies (about 82% of it).
Amazon.com, Inc. 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 26,919 addresses on AS16509, which is 4.5% of every address in the database and a substantial share of everything HProxy tracks. That makes it the 2nd largest source of free proxies of every network we have ever seen. 6,382 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 now24%
- Answered before55%
- Never answered21%
- 1LimitedNetwork-ASAS213790227,266
- 2Amazon.com, Inc.AS1650926,917
- 3Cloudflare, Inc.AS1333522,185
- 4SECURED SERVERS LLCAS2045419,475
- 5Cloudflare, Inc.AS20924214,140
- 6Alibaba (US) Technology Co., Ltd.AS4510211,676
- 7GloboTech CommunicationsAS3666611,542
- 8ChinanetAS41348,372
How to use this proxy
Route a request through 13.208.166.217:17523 over HTTPS. Free proxies are shared and rotate out fast, so test before you rely on it.
curl -x https://13.208.166.217:17523 \
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 13.208.166.217:17523
13.208.166.217:17523 is in the live pool right now, and it stays there only for as long as it keeps answering.
Port 17523: 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.
It has answered every single check
Each check opens a real connection to 13.208.166.217:17523 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. 13.208.166.217:17523 has completed that handshake on all 1 attempts so far, which is rare on a free public proxy and worth treating with some suspicion until the record is longer. The handshake is attempted across HTTP, HTTPS, SOCKS4 and SOCKS5, which is how we know it spoke HTTPS and SOCKS4 and SOCKS5.
1 checks, 1 answered
That is 100% of the time, measured since August 13, 2026. Every one of those results, successes and failures alike, is a connection HProxy opened itself.
It is being re-tested continuously
13.208.166.217:17523 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 13.208.166.217:17523, and nothing it does not.
- First seen
- August 13, 2026
- Last checked
- August 13, 2026
- Next check due
- continuously
- Checks run
- 1
- Times it answered
- 1
- Spoke
- HTTPS, SOCKS4, SOCKS5
100%
answered 1 of 1 checks
Questions about 13.208.166.217:17523
Is 13.208.166.217:17523 a working proxy right now?
Yes. 13.208.166.217:17523 answered HProxy's automated check 2 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 13.208.166.217?
It speaks HTTPS, SOCKS4, SOCKS5, and our checks grade it elite. The port is 17523. Point your client at 13.208.166.217:17523 over https to route a request through it.
Where is 13.208.166.217 located?
Traffic through it exits from Osaka, Japan, on Amazon.com, Inc. (AS16509). That is where the destination site will think your request came from.
How fast is 13.208.166.217:17523?
It answered in 950ms 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 13.208.166.217:17523 been?
Across 1 day of tracking it answered 100% 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 13.208.166.217:17523?
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?
6,381 other free proxies are live on Amazon (AS16509) in our pool right now, alongside 13.208.166.217:17523. 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 Japan?
Yes, 580 free proxies are exiting from Japan in our pool right now, answering in 1156ms 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
This one is good, and it will still disappear.
13.208.166.217:17523 has answered 100% of our checks, which puts it well above most of what we track. It is still a public endpoint with nobody standing behind it: nobody agreed to serve you, no capacity is set aside for you, and there is no warning on the day it stops. Fine for a test, a bad foundation for anything that has to work tomorrow.
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.