Busan, South Korea

Busan, South Korea is a submarine cable landing point in South Korea (coordinates 35.1701°, 128.9993°). It serves 10 submarine cable systems, making it a major regional hub in South Korea's international connectivity infrastructure.

Busan, officially Busan Metropolitan City, is the second most populous city in South Korea, after Seoul; it has a population of over 3.3 million as of 2024. Alternatively romanized as Pusan, it is the economic, cultural and educational center of southeastern South Korea, with its port being South Korea's busiest and the sixth-busiest in the world. The surrounding "Southeastern Maritime Industrial Region" is South Korea's largest industrial area. The large volumes of port traffic and urban population in excess of 1 million makes Busan a Large-Port metropolis using the Southampton System of Port-City classification. As of 2025, Busan Port is the primary port in Korea and the world's sixth-largest container port. Wikipedia

Connected submarine cables

Operators landing at Busan, South Korea

Cables landing at Busan, South Korea are operated by 40 distinct consortium partners and carriers, including AT&T, Amazon Web Services, Arteria, BT, China Mobile, China Telecom, China Unicom, Chunghwa Telecom, DongHwa Telecom, Dreamline, and 30 others. Each cable is typically jointly owned by a consortium of tier-one carriers and hyperscale operators who share construction costs and capacity; the operator mix reflects both regional incumbents and global players with interest in the routes served by this landing point.

Connectivity profile

From Busan, South Korea, international traffic can reach 10 countries through 10 cable systems. Destinations include China, Japan, Malaysia, Philippines, Singapore, South Korea, Taiwan, Thailand and 2 more. With multiple redundant paths, traffic at this landing point can reroute through alternative cables if any single system experiences an outage.

Monitoring status

No monitoring incidents were recorded on cables serving Busan, South Korea in the past 90 days — all connected systems remained within normal latency thresholds. Our monitoring network continuously samples latency from external probes to targets reachable via these cables.

About the cables

• E2A (2029) — E2A is a cross-regional submarine cable connecting South Korea, Japan, United States, Taiwan. Its 6 landing points at Busan, Itoshima, Maruyama, Morro Bay, Tomakomai, and 1 more bridge the networks of East Asia, North America, providing an important path for international data traffic. Read more →
• I-AM Cable (2029) — I-AM Cable is a cross-regional submarine cable connecting South Korea, Singapore, Japan, Malaysia. Its 6 landing points at Busan, Changi, Fukuoka, Minamiboso, Sedili, and 1 more bridge the networks of East Asia, Southeast Asia, providing an important path for international data traffic. Read more →
• JAKO (2027) — JAKO is a point-to-point submarine cable linking South Korea and Japan. Landing at Busan, Fukuoka, it provides a direct fiber-optic path between the two countries, serving as both a primary data route and a redundancy option for neighboring cable systems. Read more →
• Southeast Asia-Japan Cable 2 (SJC2) (2025) — Southeast Asia-Japan Cable 2 (SJC2) is a major intercontinental submarine cable system spanning 7 countries across East Asia, Southeast Asia. With 10 landing points — including Busan, Changi South, Chikura, Chung Hom Kok, Fangshan, and 5 more — it forms one of the backbone links carrying international internet traffic between continents. Read more →
• New Cross Pacific (NCP) Cable System (2018) — New Cross Pacific (NCP) Cable System is an intercontinental submarine cable system connecting East Asia and North America, with 7 landing points across 5 countries including Busan, South Korea, Chongming, China, Lingang, China, Maruyama, Japan and others. The cable provides cross-continental connectivity, offering an important route for data traffic between East Asia and North America. Read more →
• Asia Pacific Gateway (APG) (2016) — Asia Pacific Gateway (APG) is a major intercontinental submarine cable system spanning 8 countries across East Asia, Southeast Asia. With 11 landing points — including Busan, Changi South, Cherating, Chongming, Danang, and 6 more — it forms one of the backbone links carrying international internet traffic between continents. Read more →
• EAC-C2C (2002) — EAC-C2C is a major intercontinental submarine cable system spanning 6 countries across East Asia, Southeast Asia. With 16 landing points — including Ajigaura, Batangas, Busan, Cavite, Changi North, and 11 more — it forms one of the backbone links carrying international internet traffic between continents. Read more →
• Korea-Japan Cable Network (KJCN) (2002) — Korea-Japan Cable Network (KJCN) is a point-to-point submarine cable linking South Korea and Japan. Landing at Busan, Fukuoka, Kitakyushu, it provides a direct fiber-optic path between the two countries, serving as both a primary data route and a redundancy option for neighboring cable systems. Read more →
• APCN-2 (2001) — APCN-2 is a major intercontinental submarine cable system spanning 7 countries across Southeast Asia, East Asia. With 10 landing points — including Batangas, Busan, Cherating, Chikura, Chongming, and 5 more — it forms one of the backbone links carrying international internet traffic between continents. Read more →
• FLAG North Asia Loop/REACH North Asia Loop (2001) — FLAG North Asia Loop/REACH North Asia Loop is a regional submarine cable serving 4 countries: South Korea, China, Taiwan, Japan. With landing points at Busan, Tong Fuk, Toucheng, Wada, it strengthens regional internet resilience and provides route diversity — crucial when nearby cables experience faults. Read more →

Submarine cable data from TeleGeography. Geographic context from Wikipedia. Monitoring metrics updated continuously by GeoCables.