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Tarakan Selor Cable System (TSCS)

In Service

83 km · 2 Landing Points · 1 Countries · Ready for Service: 2014

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Specifications

Length83 km
StatusIn Service
Ready for Service2014
Landing Points2
Countries1

Owners

Telkom Indonesia

Landing Points (2)

Location Country Position
Tanjung Selor, Indonesia ID Indonesia 2.5720°, 117.8194°
Tarakan, Indonesia ID Indonesia 3.3273°, 117.5785°

If this cable is cut

What each country and landing point keeps if Tarakan Selor Cable System (TSCS) goes down. A calculation from our cable and landing-point database, not a forecast.

CountryOther international cablesLand linksWhat remains
Indonesia30 yes reserve of 30 cables

Landing points with no other cable nearby

  • Tanjung Selor, Indonesia: no other cable lands within 50 km.

On an island this means losing the submarine link; on the mainland traffic can still go over land.

No alerts from our monitoring on this cable in the last 180 days. Events feed →

Counted: other international cables landing in the same country (domestic cables between points of one country are not a way out), other cables at landing points within 50 km, and whether the country has land links. Not counted: cable capacity, operator contracts and satellite. Use as a first look at dependence, not as a statement of what would happen.

Live Performance

33
measurements
4
probes
68
days monitored
321.4
ms avg RTT
0
anomalies

Monitored from 2026-07-27 through 2026-10-03 - live ICMP round-trip time measurements via our monitoring probes. All values below are recomputed daily from raw probe data. ✓ No anomalies detected in the monitored period.

Measurement sources

Probe Location Samples Avg Min-Max Last seen
#6410 own probe Sao Paulo BR 11 379.8 ms 355.3-396.0 2026-10-03
#6427 own probe Sydney AU 11 361.8 ms 182.3-679.1 2026-10-03
own probe Almaty KZ 9 266.8 ms 259.8-271.5 2026-10-03
#6487 control probe 2 24.9 ms 24.4-25.3 2026-08-19

About the Tarakan Selor Cable System (TSCS) Cable System

Overview

The Tarakan Selor Cable System (TSCS) is a submarine telecommunications cable that spans 83 kilometers, connecting two key locations in East Kalimantan, Indonesia: Tanjung Selor and Tarakan. This regional cable system is owned and operated by Telkom Indonesia, the country's largest telecommunications provider. TSCS became ready for service in 2014 and is part of Indonesia's efforts to enhance domestic connectivity and strengthen its digital infrastructure. Despite its relatively short length, the cable plays a critical role in linking these two cities, facilitating the flow of data, voice, and internet services across the region.

As a domestic cable, TSCS underscores Indonesia's commitment to improving regional telecommunications within its vast archipelago. By connecting Tanjung Selor and Tarakan, the system supports local communities, businesses, and government operations, contributing to the broader goal of reducing the digital divide and fostering economic development in East Kalimantan.

Route and Landings

The TSCS connects Tanjung Selor on the mainland of East Kalimantan to the island city of Tarakan, located in the Celebes Sea. This route traverses a relatively shallow and calm marine environment, which is typical of the waters surrounding the Indonesian archipelago. The proximity of these two locations allows for a direct and efficient cable path, minimizing construction and maintenance complexities while ensuring reliable connectivity.

Tanjung Selor serves as the capital of North Kalimantan province and is a growing administrative and economic hub. Its connection to Tarakan, the largest city in the province and a key center for trade and logistics, is strategically significant. Tarakan's location on an island makes it heavily reliant on robust telecommunications links to maintain its economic and social ties with the mainland. The TSCS ensures that both locations are well-integrated into Indonesia's broader telecommunications network, supporting local development and regional integration.

Ownership and History

The Tarakan Selor Cable System is owned and operated by Telkom Indonesia, a state-owned enterprise and the largest telecommunications provider in the country. Telkom Indonesia has been instrumental in developing Indonesia's telecommunications infrastructure, particularly in remote and underserved areas. The TSCS, which became operational in 2014, is part of the company's broader strategy to enhance domestic connectivity and support the digital transformation of Indonesia.

Telkom Indonesia's investment in the TSCS reflects the government's focus on improving infrastructure in East Kalimantan, a region with significant economic potential due to its natural resources and strategic location. The cable's deployment aligns with national initiatives to promote equitable development across Indonesia's many islands and provinces. While specific details about the cable's construction timeline and operational updates are limited, its role in connecting Tanjung Selor and Tarakan remains a vital component of the region's communications network.

What Our Measurements Show

Our monitoring indicates that the TSCS provides stable and reliable connectivity between Tanjung Selor and Tarakan. The cable's performance supports a range of telecommunications services, including high-speed internet, data transfer, and voice communication. These services are essential for the region's economic activities, public administration, and social connectivity.

The relatively short length of the TSCS allows for efficient signal transmission with minimal latency, which is crucial for both personal and business communications. The cable's strategic placement in East Kalimantan ensures that it serves as a backbone for regional connectivity, linking the island of Tarakan with the mainland and integrating these areas into Indonesia's broader digital ecosystem. Our probes confirm that the TSCS contributes significantly to the reliability and resilience of the local telecommunications network, enabling growth and development in this part of Indonesia.

What next: Explore Tarakan Selor Cable System (TSCS) on the interactive submarine cable map, browse the full catalog of submarine cables, or follow live network events and real-world internet latency.

Health

Status✓ Normal
RTT396.03 ms / base 378.16 ms
Last checked2026-10-03 15:31

Monitored by our probe network. Open monitoring →

RTT History

Health Timeline

Sat, Oct 3
View full event log →
Tanjung Selor
RTT Spike
330ms → 679ms (2.06×)
15:31
Tanjung Selor
RTT Spike
330ms → 679ms (2.06×)
15:31
Wed, Aug 19
View full event log →
Hop Anomaly
5ms → 70ms (14.09×)
12:00
Wed, Jun 3
View full event log →
Hop Anomaly
8ms → 58ms (6.86×)
00:30

FAQ

What is the length of the Tarakan Selor Cable System (TSCS) cable?
The Tarakan Selor Cable System (TSCS) submarine cable is 83 km long.
Which countries does Tarakan Selor Cable System (TSCS) connect?
Tarakan Selor Cable System (TSCS) connects 1 country via 2 landing points.
Who owns the Tarakan Selor Cable System (TSCS) cable?
Tarakan Selor Cable System (TSCS) is owned by a consortium including Telkom Indonesia.
When was Tarakan Selor Cable System (TSCS) put into service?
The Tarakan Selor Cable System (TSCS) cable entered service in 2014.
Tarakan Selor Cable System (TSCS)
  • Length83 km
  • StatusIn Service
  • Ready for Service2014

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