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Sirius South

In Service

219 km · 2 Landing Points · 2 Countries · Ready for Service: 1999

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Specifications

Length219 km
StatusIn Service
Ready for Service1999
Landing Points2
Countries2

Owners

Virgin Media Business

Landing Points (2)

Location Country Position
Blackpool, United Kingdom GB United Kingdom 53.8087°, -3.0508°
Dublin, Ireland IE Ireland 53.3480°, -6.2483°

📡 Live Performance

220
measurements
8
probes
78
days monitored
52.4
ms avg RTT
0
anomalies

Monitored from 2026-03-07 through 2026-05-24 — live ICMP round-trip time measurements via RIPE Atlas 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
#769 RIPE Atlas 171 48.9 ms 20.0–128.2 2026-05-23
#127 RIPE Atlas 26 54.1 ms 22.4–86.3 2026-05-24
#1014473 own probe Minsk BY 4 52.4 ms 49.2–59.5 2026-05-23
#1014589 own probe Almaty KZ 4 108.4 ms 106.8–112.0 2026-05-23
#1014597 own probe Tbilisi GE 4 71.6 ms 71.4–71.9 2026-05-23
#1014969 own probe Jerusalem IL 4 76.8 ms 75.8–78.5 2026-05-23
#1015313 own probe Sevastopol UA 4 87.6 ms 86.2–88.2 2026-05-23
#1015523 own probe Moscow RU 3 60.2 ms 59.8–60.8 2026-05-23

About the Sirius South Cable System

Overview

Sirius South is a regional submarine cable connecting Dublin, Ireland to Blackpool, United Kingdom. It was ready for service in 1999 and is operated by Virgin Media Business.

Route and Landings

Dublin, Ireland

Blackpool, United Kingdom

Ownership and Operators

Sirius South is owned and operated by Virgin Media Business.

Status and Timeline

The cable entered service in 1999 and its status remains unknown. No further details on current operational status are available.

Strategic Context

Sirius South connects Ireland and the United Kingdom, providing a direct fiber-optic link between these two countries. This intercontinental route is part of the broader network that supports data exchange and communication services across the Atlantic Ocean. Both Ireland and the United Kingdom play significant roles in regional submarine infrastructure, serving as key landing points for various transatlantic cables.

Virgin Media Business, a subsidiary of Liberty Global, operates in multiple countries within Europe and North America. The company provides broadband, television, and mobile services to residential and business customers across its network. Ireland, being part of the European Union, is strategically located as a hub for international traffic, while the United Kingdom serves as a major market with strong economic ties to both continental Europe and other parts of the world.

The corridor that Sirius South traverses connects two important regions: Western Europe and Northern Europe. This route supports various services including internet connectivity, data transfer, and voice communications between Ireland and the United Kingdom.

📡 Health

Status✓ Normal
RTT86.30 ms / base 48.13 ms
Last checked2026-05-24 22:30

Monitored using RIPE Atlas probes. Open monitoring →

📊 RTT History

Route: #769 → Dublin Measured: 2026-05-23 01:01
71 ms
Min Avg Max #
7 days 20.4 55.9 93.2 13
30 days 20.4 51.8 128.2 80
60 days 20.0 48.9 128.2 171

Health Timeline

Sat, May 23
View full event log →
Dublin
Resolved
41ms → 71ms
01:01
📊
Dublin
Improving
41ms → 58ms
00:31
📊
Dublin
Improving
41ms → 56ms
00:00
Fri, May 22
View full event log →
🔴
Dublin
Anomaly Confirmed
45ms → 93ms (2.09×)
23:00
Dublin
RTT Spike
45ms → 93ms (2.09×)
23:00
🚨
Dublin
Alert Created
41ms → 85ms (2.06×)
23:00
🔴
Dublin
Anomaly Confirmed
41ms → 85ms (2.06×)
23:00
Dublin
RTT Spike
41ms → 85ms (2.06×)
23:00
Dublin
RTT Spike
42ms → 84ms (2.00×)
22:30
Dublin
RTT Spike
42ms → 86ms (2.02×)
16:30
Tue, May 12
View full event log →
Dublin
RTT Spike
46ms → 94ms (2.03×)
06:31
Mon, May 11
View full event log →
Dublin
Resolved
38ms → 21ms
18:31
📊
Dublin
Improving
38ms → 74ms
18:00
🚨
Dublin
Alert Created
38ms → 88ms (2.30×)
17:01
🔴
Dublin
Anomaly Confirmed
42ms → 99ms (2.38×)
17:01
Dublin
RTT Spike
42ms → 99ms (2.38×)
17:01
🔴
Dublin
Anomaly Confirmed
38ms → 88ms (2.30×)
17:01
Dublin
RTT Spike
38ms → 88ms (2.30×)
17:01
Dublin
RTT Spike
35ms → 84ms (2.40×)
16:30
Thu, Apr 30
View full event log →
🔗
Hop Anomaly
8ms → 27ms (3.43×)
00:30
Fri, Apr 17
View full event log →
Dublin
RTT Spike
43ms → 90ms (2.07×)
06:32
Dublin
Resolved
44ms → 22ms
02:31
📊
Dublin
Improving
44ms → 20ms
02:00
🚨
Dublin
Alert Created
44ms → 95ms (2.18×)
01:01
🔴
Dublin
Anomaly Confirmed
44ms → 95ms (2.18×)
01:01
Dublin
RTT Spike
44ms → 95ms (2.18×)
01:01
Dublin
RTT Spike
42ms → 85ms (2.00×)
00:32
Thu, Apr 16
View full event log →
Dublin
RTT Spike
43ms → 94ms (2.15×)
06:31
Tue, Apr 14
View full event log →
Dublin
RTT Spike
40ms → 85ms (2.12×)
18:32
Sun, Mar 29
View full event log →
Blackpool
Resolved
06:29

FAQ

What is the length of the Sirius South cable?
The Sirius South submarine cable is 219 km long.
Which countries does Sirius South connect?
Sirius South connects 2 countries via 2 landing points.
Who owns the Sirius South cable?
Sirius South is owned by a consortium including Virgin Media Business.
When was Sirius South put into service?
The Sirius South cable entered service in 1999.
Sirius South
  • Length219 km
  • StatusIn Service
  • Ready for Service1999

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