Is 5.102.108.221:999 a proxy? Yes.
5.102.108.221:999 is a public HTTPS proxy in the HProxy free proxy list, exiting from Mexico. It holds a spotty 40% uptime with a high 4750ms response time, and was last checked 17 min ago.
uptime
MexicoHow this one compares
Reliable enough to sit in the better half 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 5,845 proxies answering right now, the middle of the pack answers 24.1% of the checks we send it.
40%
of 5,032 checks answered
Pool median 24.1%. 5.102.108.221:999 is in the better half.
4750ms
on its last response
Pool median 7,994ms, so this one is roughly 2x quicker than typical.
92
days tracked, still in the live pool
Of the 240,260 free proxies we have watched stop working, half were gone within 25 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 240,260 endpoints that stopped working.
Middle halfMedianFull range
How quickly one answers
Response time on the last successful check, across the 5,845 proxies answering right now.
Where this address sits
Right now our free pool holds 1 other free proxy on Guillermo Robles, and 1,061 in Mexico. 5.102.108.221:999 sits inside that set, so if it is not usable the pages below are where its closest alternatives are. At 4750ms it is slower than the 4591ms median for Mexico proxies.
How many free proxies are on Guillermo Robles Ramirez
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 32 addresses on AS270172, which is 0.00% of every address in the database and a small corner of the database. 2 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 now6%
- Answered before44%
- Never answered50%
- 1LimitedNetwork-ASAS213790227,474
- 2SECURED SERVERS LLCAS1943779,187
- 3SECURED SERVERS LLCAS2045446,884
- 4Amazon.com, Inc.AS1650942,316
- 5Cloudflare, Inc.AS1333522,919
- 6M247AS900918,318
- 7Cloudflare, Inc.AS20924214,272
- 8Alibaba (US) Technology Co., Ltd.AS4510212,231
- AS270172 sits outside the 250 largest networks we hold.
How to use this proxy
Route a request through 5.102.108.221:999 over HTTPS. Free proxies are shared and rotate out fast, so test before you rely on it.
curl -x https://5.102.108.221:999 \
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 5.102.108.221:999
5.102.108.221:999 is in the live pool right now, and it stays there only for as long as it keeps answering.
Port 999: System port
Ports below 1024 are protected. On most systems you need administrator rights to open one at all. So whatever is answering here was set up by someone with full control of that machine, not by some ordinary program that happened to be running.
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 5.102.108.221:999 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.
5,032 checks, 2,018 answered
That is 40% of the time, measured since June 8, 2026. Every one of those results, successes and failures alike, is a connection HProxy opened itself.
It is being re-tested continuously
5.102.108.221:999 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 5.102.108.221:999, and nothing it does not.
- First seen
- June 8, 2026
- Last checked
- September 8, 2026
- Next check due
- continuously
- Checks run
- 5,032
- Times it answered
- 2,018
- Spoke
- HTTPS
40%
answered 2,018 of 5,032 checks
Questions about 5.102.108.221:999
Is 5.102.108.221:999 a working proxy right now?
Yes. 5.102.108.221:999 answered HProxy's automated check 17 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 5.102.108.221?
It speaks HTTPS, and our checks grade it elite. The port is 999. Point your client at 5.102.108.221:999 over https to route a request through it.
Where is 5.102.108.221 located?
Traffic through it exits from San Juan del Rio, Mexico, on Guillermo Robles Ramirez (AS270172). That is where the destination site will think your request came from.
How fast is 5.102.108.221:999?
It answered in 4750ms 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 5.102.108.221:999 been?
Across 82 days of tracking it answered 40% 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 5.102.108.221:999?
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 Guillermo Robles?
1 other free proxy is live on Guillermo Robles (AS270172) in our pool right now, alongside 5.102.108.221:999. 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 Mexico?
Yes, 1,061 free proxies are exiting from Mexico in our pool right now, answering in 4591ms 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.
5.102.108.221:999 answers 40% 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.
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.