Show HN: Check if your IP has appeared in a residential proxy network

microcode 68 points 40 comments September 15, 2026
haveibeenproxied.com · View on Hacker News

Discussion Highlights (13 comments)

toomuchtodo

Needs an API to query other IPs beyond one's own.

varispeed

I am on mobile network and it fails to consider this as a factor that other people who might receive this IP could be having a proxy.

stogot

It says I was observed on a couple areas, but not sure what to do with that information. It would be great if thi tool provided links to guides to discover more.

rckoepke

In my testing, Synthient's tool[0] and offerings have performed very well for this kind of service. Synthient have also achieved impressive proven success against malicious botnets[1]. 0: https://synthient.com/context/ip/ 1: https://www.wsj.com/tech/kimwolf-hack-residential-proxy-netw... / https://archive.ph/SpKVn

xyst

Seems it only detects ipv4. Any plan to support scanning ipv6 /56 range?

ranger_danger

Keep in mind these databases can be wildly inaccurate and basically impossible to prove them wrong (you can't prove a negative). I've seen this (and verified with others) with other sites like iknowwhatyoudownload.com where they allege your connection downloaded something very illegal (like CSAM) even though you know for certain it never happened and you haven't been hacked.

TZubiri

very nice. Can we use it in other IPs? (without having to issue the request from that IP)

jasonvorhe

This would probably false positive every CGNAT IP, or am I misunderstanding something?

koutakun

Would be great if it told me how recently it was detected. I have a dynamic IP from my ISP and it could very well be someone else's device 3 days or 3 months ago.

hollow-moe

My public IP is shared with some 150 people in a student dorm, and the result is negative which I find very unlikely.

babooka

this company Spur recently got millions in funding and their pricing seems to be directed at large companies. Who's buying these absolutely non-actionable IP databases? Do corporate buyers not understand you can't just block someone because they share the IP with someone else who downloaded a dodgy app?

hansufati

wow my comment with a blog post about a better approach to detect residential proxies got... removed! Not sure about HN internals, do moderators do that or is this OP using several accounts to downvote contrarian comments?

negura

How exactly do they obtain this data? Residential proxy providers don't publish their IP list (you connect to one of their servers which then tunnels your traffic to the residential exit point). Plus there are tons of such providers. In any case, residential proxies are a godsend. Because most of the everyday services like web shops, govt information portals, even personal blogs sometimes are blocking access usings captchas. EDIT: they write this on their marketing copy [0]: > The Spur platform identifies traffic originating from residential proxy networks by analyzing service fingerprints, ASN ownership, and behavioral indicators. Sounds like guesswork that results in a ton of false positives. And the more innocent IPs are blocked by platforms on the basis of this data, the more the demand increases for residential proxies, from users who need access to essential services. Talk of creating the problem and then selling the "solution". [0] https://spur.us/platform/residential-proxy-detection

Semantic search powered by Rivestack pgvector
6,718 stories · 61,457 chunks indexed