What this tool checks, and why each one matters
Getting a Korean IP address is only the first hurdle. Korean services compare several signals against each other, and a proxy that passes the IP test while failing the others is a common reason people stay locked out. Here's what each row above is telling you.
Country and city
The basic question: does a geolocation database place this IP in South Korea? Worth knowing that databases disagree with each other. An IP that reads as Korean here may read as something else to the specific service you're trying to reach, which is why testing against your actual target matters more than any checker.
Network type — residential or datacenter
This is the single most useful line. If the network owner is a consumer Korean ISP — KT, SK Broadband, LG U+ — the address looks like an ordinary household. If it belongs to a hosting company or cloud provider, sites with bot defences can see that as easily as this page can, and many Korean platforms treat it with suspicion by default. The difference between residential and datacenter proxies is exactly this distinction.
Timezone match
Your browser reports its own timezone, set by your operating system. If your IP says Seoul but your clock says New York, that inconsistency is trivially detectable in JavaScript — and it's one of the signals used by the detection stacks we describe in how Korean sites detect VPNs and proxies.
Browser language
The same logic. A connection from Korea whose browser asks for content in only English is not proof of anything on its own, but it's another data point that doesn't line up.
WebRTC exposure
WebRTC is a browser feature for real-time audio and video. On some setups it can reveal your real IP address even while a proxy or VPN is active, because it negotiates connections outside the proxied path. If this row shows an address different from the one at the top of the page, your proxy is leaking — and any site running the same check can see both.
Frequently asked questions
Why does this say I'm not in Korea when my VPN is connected?
Three common causes: the VPN is connected to a non-Korean server, the connection dropped without the app noticing, or the IP is Korean but the geolocation database hasn't caught up with a recently reassigned range. Check the network owner row — if it names a Korean company, the third explanation is likely.
What is South Korea's IP range?
There isn't one. KRNIC, Korea's national registry, allocates many separate blocks across the country's ISPs, and assignments change over time. In practice the useful question isn't which range an address sits in, but whether geolocation databases agree it's Korean and whether the owner looks like a household or a datacenter.
Does a Korean IP address let me use Korean banking?
Usually not by itself. Korean financial and government services verify identity through a mobile number registered to a Korean resident or foreigner registration number. The IP is necessary but not sufficient, and no proxy changes the verification step.
Is my IP address stored by this page?
No. This page has no server-side code and sets no cookies. Your browser asks a third-party geolocation service directly, and the answer never passes through us. Everything else on the page is calculated locally in your browser.
Why does my IP look Korean but sites still block me?
Almost always because the address is a datacenter IP rather than a residential one, or because another signal — timezone, browser language, TLS fingerprint, behaviour — contradicts the location. A clean Korean IP attached to an obviously automated client still fails.