Is 131.100.19.5:4321 a proxy? Yes.
131.100.19.5:4321 is a public HTTP proxy in the HProxy free proxy list, exiting from Brazil. It holds a spotty 12% uptime, and was last checked 2 h ago.
uptime
BrazilUptime & downtime
7
Days tracked
388
Checks run
90.7%
Downtime
7
Down days
Continuous monitoring
How HProxy checks 131.100.19.5:4321
131.100.19.5:4321 is in the live pool right now, and it stays there only for as long as it keeps answering. Here is exactly what HProxy does to it, and how often.
Port 4321: Registered port range
This port sits in the registered range, which any user-level program may listen on without special rights. It carries no reserved meaning of its own, so the number tells you the proxy was configured deliberately on a chosen port rather than on a system 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 an actual connection to 131.100.19.5:4321 and waits up to 4 seconds for the other end to complete a proxy handshake. 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.
908 checks, 106 answered
That is 12% of the time, measured since July 19, 2026. Every one of those results, successes and failures alike, is a connection HProxy opened itself.
It is being re-tested continuously
131.100.19.5:4321 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 131.100.19.5:4321, and nothing it does not.
- First seen
- July 19, 2026
- Last checked
- August 3, 2026
- Next check due
- continuously
- Checks run
- 908
- Times it answered
- 106
- Spoke
- HTTP
12%
answered 106 of 908 checks
How to use this proxy
Route a request through 131.100.19.5:4321 over HTTP. Free proxies are shared and rotate out fast, so test before you rely on it.
curl -x http://131.100.19.5:4321 \
https://api.ipify.org?format=json
Other live free proxies
View all →
Where this address sits
Right now our free pool holds no other free proxies on AS61753 right now, and 190 in Brazil. 131.100.19.5:4321 sits inside that set, so if it is not usable the pages below are where its closest alternatives are.
Questions about 131.100.19.5:4321
Is 131.100.19.5:4321 a working proxy right now?
Yes. 131.100.19.5:4321 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 131.100.19.5?
It speaks HTTP. The port is 4321. Point your client at 131.100.19.5:4321 over http to route a request through it.
Where is 131.100.19.5 located?
Traffic through it exits from Colinas do Tocantins, Brazil, on CLEYTON DE SALES COSTA - ME (AS61753). That is where the destination site will think your request came from.
How reliable has 131.100.19.5:4321 been?
Across 16 days of tracking it answered 12% 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 131.100.19.5:4321?
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 AS61753?
None other than 131.100.19.5:4321 at the moment. AS61753 (AS61753) has no other free proxies live in our pool right now, though that changes as we re-verify.
Are there other free proxies in Brazil?
Yes, 190 free proxies are exiting from Brazil in our pool right now, answering in 4066ms 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
Need pools that stay clean?
Free IPs are shared and rotate out fast, so success rates swing. The paid network gives you dedicated-clean pools that hold up under load.
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.