Where did Korean original IPs originate? An analysis of the network transmission path from the Korean backbone to the user side

Introduction: This article analyzes from technical and operational perspectives “where Korean native IPs originate,” that is, how Korean public IP addresses are generated within national networks and transmitted to users. Suitable for readers who need to determine IP ownership, optimize routes, or perform geolocation.

Where does South Korea’s original IP begin? Allocation and Registration Process

Korean original IP The “starting point” is usually assigned by regional Internet registration authorities to local operators or organizations, who then announce it in their Autonomous System (AS) using BGP. This announcement determines the reachability of IP blocks and the routing origin, serving as the primary basis for determining whether it is a native Korean IP.

Overview of South Korea’s backbone network structure

South Korea’s backbone network consists of national-level backbone links, metropolitan backbones, and large Internet exchange centers, which carry long-distance traffic within the country. The backbone network interfaces typically use high-capacity optical fibers and multi-layer routers. Stable routing strategies and redundant paths ensure efficient forwarding of domestic traffic within the country.

International exports and undersea optical cables, switching centers

International transmission uses undersea optical cables to handle inbound and outbound traffic with international exchange centers, while international exit points connect domestic routes to the global Internet. If an IP is visible within a domestic AS and has not been announced by a foreign AS, it can generally be considered a genuine Korean-origin IP.

Domestic access and last-mile transmission

There are various access methods from the metropolitan area network to the user side, including fiber to the home, DSL, and mobile base stations. The last mile may involve the operator’s access network equipment, home routers, and NAT; this part determines whether the public IP address that the user sees is the original IP directly assigned by the operator.

Routing path resolution from the backbone to the user side

Typical path: The IP block is allocated by APNIC/national registrars → the local ISP announces it in the AS → it is forwarded via metropolitan backbones and switching centers → it reaches the last-mile access network → and finally arrives at the user’s device. Using traceroute and BGP, you can verify the autonomous system and geographical location of each hop.

Key indicators for determining the origin of an IP address

To determine whether it is a Korean-origin IP, one can refer to WHOIS registration information, BGP routing ownership, traceroute path latency and hop count, as well as whether the backbone and access ASes are located within South Korea. Also note that CGNAT and proxies may affect the “native” characteristics of the public IP address.

Conclusions and Recommendations

Conclusion: Korean native IPs originate from local registrations and ISP BGP announcements, and ultimately reach users through national backbone and access networks. It is recommended to use whois, BGP routing, and traceroute in combination for verification, while also paying attention to the positioning inaccuracies caused by CGNAT and CDN, in order to achieve accurate IP attribution determination and network optimization.