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C-Lion1

In Service

1,172 km · 3 Landing Points · 2 Countries · Ready for Service: 2016

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Specifications

Length1,172 km
StatusIn Service
Ready for Service2016
Landing Points3
Countries2

Owners

Cinia Oy

Landing Points (3)

Location Country Position
Hanko, Finland FI Finland 59.8232°, 22.9682°
Helsinki, Finland FI Finland 60.1711°, 24.9325°
Rostock, Germany DE Germany 54.0789°, 12.1324°

📡 Live Performance

57
measurements
2
probes
34
days monitored
83.2
ms avg RTT
1
anomalies

Monitored from 2026-04-10 through 2026-05-14 — live ICMP round-trip time measurements via RIPE Atlas probes. All values below are recomputed daily from raw probe data.

Measurement sources

Probe Location Samples Avg Min–Max Last seen
#3150 RIPE Atlas 56 82.7 ms 36.9–362.2 2026-05-14
#258 RIPE Atlas 1 113.5 ms 113.5–113.5 2026-04-10

About the C-Lion1 Cable System

Overview

C-Lion1 is an intercontinental submarine cable connecting Finland and Germany. The cable has three landing points in Finland (Hanko and Helsinki) and one in Germany (Rostock).

Route and Landings

Hanko, Finland:

Helsinki, Finland:

Rostock, Germany:

Ownership and Operators

C-Lion1 is operated by Cinia Oy.

Status and Timeline

The cable became ready for service in 2016. The status of the cable is unknown.

Strategic Context

The C-Lion1 submarine cable connects Finland and Germany, providing a direct fiber-optic path between these two countries. This intercontinental link serves as an important communication channel within the broader European telecommunications network. Cinia Oy, the sole owner of C-Lion1, is a Finnish company that operates in various sectors including telecommunications. Finland, as a Nordic country, has been strategically positioned to serve as a key transit point for submarine cables due to its favorable geographical location. This connection supports both domestic and international traffic, facilitating data exchange between these two countries. Germany, being one of the largest economies in Europe, has a strong need for reliable and high-capacity communication links to support its business environment. The C-Lion1 cable complements existing infrastructure by providing an additional pathway for data transmission, enhancing the overall network resilience and capacity.

📡 Health

Status✓ Normal
RTT97.28 ms / base 81.04 ms
Last checked2026-05-14 20:30

Monitored using RIPE Atlas probes. Open monitoring →

📊 RTT History

Route: #3150 → Helsinki Measured: 2026-05-14 20:30
97.3 ms
Min Avg Max #
7 days 48.7 82.4 102.1 6
30 days 36.9 82.6 362.2 50
60 days 36.9 82.7 362.2 56

Health Timeline

Fri, May 15
View full event log →
🔗
Hop Anomaly
4ms → 35ms (8.89×)
13:00
Wed, Apr 29
View full event log →
Helsinki
RTT Spike
71ms → 362ms (5.09×)
16:34
Sat, Apr 11
View full event log →
🔗
Hop Anomaly
5ms → 91ms (16.90×)
23:00

FAQ

What is the length of the C-Lion1 cable?
The C-Lion1 submarine cable is 1,172 km long.
Which countries does C-Lion1 connect?
C-Lion1 connects 2 countries via 3 landing points.
Who owns the C-Lion1 cable?
C-Lion1 is owned by a consortium including Cinia Oy.
When was C-Lion1 put into service?
The C-Lion1 cable entered service in 2016.
C-Lion1
  • Length1,172 km
  • StatusIn Service
  • Ready for Service2016

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