Is 181.78.86.251:999 a proxy? Yes, it was.
181.78.86.251:999 was a public proxy in the HProxy free proxy pool, exiting from Colombia on UFINET PANAMA S.A.. Across 777 checks it answered 30% of the time, and it has since gone dark (last answered September 17, 2026), so it is not a usable proxy right now.
across all 777 checks
ColombiaHow this one compares
It was one of the good ones, for 10 days.
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 8,008 proxies answering right now, the middle of the pack answers 28.7% of the checks we send it.
30%
of 777 checks answered
Pool median 28.7%. 181.78.86.251:999 is in the better half.
777
real connection attempts
Each one opens a socket and waits up to 90 seconds. Slow and unreachable look identical if you stop listening early.
10
days from first sighting to last answer
Of the 375,045 free proxies we have watched stop working, half were gone within 23 days of us first seeing them.
September 7, 2026
First listed by our sources
Published as a working proxy by 34 of the public lists HProxy tracks. Being listed is a claim, not a test.
September 17, 2026
Stopped answering
It answered our checks for 10 days before it went quiet.
September 20, 2026
Moved to the permanent record
It left the live pool here. Nothing is deleted: the address keeps this page and stays in the re-check rotation.
October 5, 2026
Most recent re-test
HProxy has opened 777 real connections to this endpoint in total. The sweep reaches every address in the database roughly once every 12 hours.
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 375,045 endpoints that stopped working.
Middle halfMedianFull range
How quickly one answers
Response time on the last successful check, across the 8,008 proxies answering right now.
Continuous monitoring
How HProxy checks 181.78.86.251:999
HProxy has checked 181.78.86.251:999 777 times and it answered 233 of those. Every one of those was a real connection attempt, never a lookup.
34 public sources published it
181.78.86.251 appears in 34 of the public proxy sources HProxy tracks. Lists copy from each other constantly, so an address showing up in many of them says a lot about how widely it was republished and very little about whether it ever worked.
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 181.78.86.251:999 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, so a proxy is never missed because we guessed the wrong protocol.
777 checks, 233 answered
That is 30% of the time, measured since September 7, 2026. Every one of those results, successes and failures alike, is a connection HProxy opened itself.
We are still watching for it to come back
Being archived does not stop the testing. 181.78.86.251:999 answered before, so it is exactly the kind of address that can return, and the sweep works through the whole database and reaches every address roughly once every 12 hours. Its last check was on October 5, 2026, so the next one is due within a day of that. The moment it answers again it is promoted straight back into the live free proxy list, automatically, with no manual step.
This endpoint
The record
Everything HProxy holds on 181.78.86.251:999, and nothing it does not.
- First seen
- September 7, 2026
- Last checked
- October 5, 2026
- Next check due
- within 12 hours
- Checks run
- 777
- Times it answered
- 233
- Stopped answering
- September 17, 2026
30%
answered 233 of 777 checks
Live free proxies right now
View all
Where this address sits
Right now our free pool holds 89 other free proxies on UFINET, and 474 in Colombia. 181.78.86.251:999 sits inside that set, so if it is not usable the pages below are where its closest alternatives are.
UFINET PANAMA S.A. is the 42nd 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 1,502 addresses on AS52468, which is 0.17% of every address in the database and a meaningful pocket of the database. That makes it the 42nd largest source of free proxies of every network we have ever seen. 89 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 before25%
- Never answered69%
- 1LimitedNetwork-ASAS213790227,474
- 2SECURED SERVERS LLCAS19437120,032
- 3M247AS900963,349
- 4SECURED SERVERS LLCAS2045456,868
- 5Amazon.com, Inc.AS1650948,623
- 6Cloudflare, Inc.AS1333522,930
- 7Cloudflare, Inc.AS20924214,278
- 8Alibaba (US) Technology Co., Ltd.AS4510212,351
33 networks between
42UFINET PANAMA S.A.AS524681,502
Questions about 181.78.86.251:999
Is 181.78.86.251:999 a working proxy?
No, not any more. It was a working public proxy in HProxy's free pool and has since gone dark, last answering on September 17, 2026. We still re-test it periodically in case it returns.
Was 181.78.86.251 ever actually a proxy?
Yes. We ran 777 checks against it and it answered 233 of them, about 30% of the time, over 10 days on our list.
What is the hostname for 181.78.86.251?
181.78.86.251 publishes no reverse DNS record. That is not unusual and it is not suspicious on its own, but it does mean the address volunteers nothing about who runs it, so the network and the check history below are all there is to go on.
Where was 181.78.86.251 hosted?
Bogota, Bogota D.C., Colombia, UFINET PANAMA S.A. (AS52468). It is a residential or ISP address rather than a datacenter one.
Why keep a page for an address that no longer works?
Because "was this address ever a proxy, and when" is a real question. If you are looking at this IP in a firewall log or an abuse report, the dates and the check counts here are the answer. HProxy's public proxy IP list keeps every address it has ever tracked and carries on re-testing them, so deleting this record would throw all of that away.
How many free proxies are on UFINET?
89 other free proxies are live on UFINET (AS52468) in our pool right now, alongside 181.78.86.251:999. 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 Colombia?
Yes, 474 free proxies are exiting from Colombia in our pool right now, answering in 5292ms 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
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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.