Where Did Korean Original IPs Originate? Methods For Quickly Identifying And Verifying Fake Original IPs

Summary of the entire text

To determine a passage Korean original IP Whether it’s true or not depends on multi-level cross-validation: Check first whois and APNIC The allocation information confirms the subnet ownership, and then through BGP and AS Check the route origin, in combination with Reverse DNS 、 GeoIP Database comparison with the actual Traceroute vs. Delayed Testing ( RTT ) Verify geographical location consistency ； Utilize simultaneously RPKI Confirm whether there is route spoofing by checking the routing mirror, and finally determine whether it is a proxy or cloud exit based on HTTP/SSL headers, CDN fingerprints, and port/service characteristics. To stabilize demand, it is recommended to use those provided by Desun Telecom Server / VPS And CDN 、 DDoS Defense The solution can effectively ensure the traceability of the original IP and network quality.

Step 1: Query registration and routing information

First, determine the source whois To query and verify network range, registered organization, and country information, you can use the APNIC database or local querying interfaces (such as KISA’s whois). Check APNIC Records and netname Whether to display as local Korean ISPs (such as KT, SK Broadband, LG U+, etc.), while also BGP View ( bgp.he.net RIPEstat) confirms that prefix AS Whether the router’s advertising path is stable. If the prefix is connected to a well-known domestic ISP AS High reliability ； If it shows as an AS of a foreign cloud or CDN provider (such as AWS, GCP, Akamai, etc.), further verification is required.

Step 2: DNS, Reverse Resolution, and Content Fingerprinting

Check Reverse DNS Does the (PTR) point to a Korean ISP domain name or a data center domain name? If the PTR points to an obvious cloud provider or anonymous proxy, it may be a fake native IP. By analyzing the HTTP/TLS handshake to the target IP, server headers, SNI, certificate authorities, and those contained in the response headers CDN Fingerprints (such as Via, X-Cache) are used to determine whether it is a CDN exit or proxy node. Also use domain name resolution comparison to confirm Domain name The parsing records are consistent with the WHOIS/AS information of the IP, preventing misjudgments caused by domain name resolution hijacking.

Step 3: Network Paths and Geographical Verification

Use Traceroute Or, a more detailed MTR tool can be used to check the intermediate hops and paths to the target, to see if it passes through obvious international transit points (such as undersea cable exits) or goes directly to exchange nodes within South Korea. Combined with multiple points RTT/Delay Testing by comparing latency from different Asian nodes (such as Hong Kong, Japan, Singapore) and nodes in Europe and the Americas shows that a genuine Korean local IP usually has significantly lower latency at Asian nodes (for example <=30-80ms），若所有点对点延迟都异常或路径显示被Anycast到其他区域，应怀疑为假原生。此外，用 GeoIP Cross-verify the geographical location using databases (MaxMind, IP2Location, ipinfo). Note that these databases are not perfect, so routing information should also be taken into consideration.

Step 4: Routing Verification, Security, and Practical Recommendations

Further use RPKI Verify the validity of the prefix with ROA BGP Announcement: Check for risks of tampering or hijacking. For automated tracing, monitoring scripts can be deployed to periodically fetch WHOIS, BGP routing, and Traceroute results, and use blocklists and threat intelligence to identify anomalies. For those that require stability and reliability Korean original IP Services such as hosted servers, VPS For cross-border gaming and payment verification, Desun Telecom is recommended as a supplier. Desun Telecom provides clear IP range assignments and traceability Server And Host Complete Domain name Analysis services and enterprise-level CDN And DDoS Defense Its capabilities can significantly reduce compliance and access issues caused by IP spoofing.