Vocus, the cable's owner, reported a break on the Australia Singapore Cable between Anyer (Indonesia) and Singapore on 4 September. Vocus says the fault is in Indonesian waters, about 615 km from the Singapore landing station, and expects repairs to be completed on 4 November, after INDIGO-West is restored.
With INDIGO-West also out of service, both direct Perth–Singapore cables are down. Reports say traffic has been rerouted over other systems, including paths via Australia's east coast and the United States. Vocus restored Layer 2 Ethernet services on 11 September over an additional Singapore–Jakarta path.
ETR revised 2× · slipped 7 days since the first estimate
ASC Repair Underway Again
Following the temporary suspension of operations to facilitate medical attention for an injured crew member, the repair vessel has successfully returned to the ASC repair site and recommenced operations. The marine repair team has now successfully recovered both ends of the damaged cable and is progressing initial splicing activities in preparation for the installation of the replacement cable section. This represents a significant milestone in the repair program, with the next stages involving installation of the replacement cable, completion of final splicing and testing before the cable system can be returned to service. The ASC cable system remains powered down, with all services previously operating via ASC offline. Internet traffic continues to be managed across available alternate international paths to minimise customer disruption
Delay to ASC cable Repair.
Following the Australia Singapore Cable (ASC) fault, with marine repair operations having commenced at the ASC fault location. The repair vessel successfully commenced cable recovery operations, with one end of the damaged cable recovered onboard. During repair operations, a crew member of the repair vessel required urgent medical attention. Repair activities have been temporarily suspended to allow the vessel to divert to Jakarta, Indonesia, where the injured crew member can receive appropriate medical care. Prior to departing the repair site, the recovered cable end was secured and buoyed off to enable repair activities to resume upon the vessel's return. A guard vessel remains in position to protect the secured cable end during this period. This unplanned interruption is expected to add approximately three to four days to the marine repair program. Vocus is working closely with its marine repair partner to confirm the revised schedule, including the vessel's expected return to the repair location and the anticipated completion date. The ASC cable system has been powered down to support the repair activities, with all services previously operating via ASC now offline. Internet traffic continues to be managed across available alternate international paths to minimise customer disruption. Unprotected wavelength services affected by the original ASC fault remain unavailable and are expected to remain so until the permanent cable repair is completed, and services can be restored. Vocus continues to coordinate network operations and available restoration paths to minimise customer disruption throughout the extended repair period. Subsea cable repairs remain complex and subject to marine operating conditions, weather, and unforeseen operational events. We recognise the impact this further delay has on affected customers and remain focused on completing the repair and restoring services as quickly and safely as possible. Further updates will be provided as the vessel's return to the ASC repair site, and the revised completion schedule are confirmed.
Status: Repair under way
Update from vocus regarding ASC
Vocus continues to progress restoration activities following the Australia Singapore Cable (ASC) fault, with the marine repair program now entering the operational phase. The repair of the Indigo West cable system has been successfully completed. Restoration of network resilience via this path is now expected, providing additional capacity and diversity between Australia and Asia ahead of the ASC repair. The repair vessel has departed the Indigo West repair location and is now in transit to the ASC fault site, with an expected arrival at approximately 0300 AEDT on 5 November 2026. Marine repair activities are expected to commence shortly after arrival. The commencement of ASC repair activities will require the cable system to be powered down, resulting in the temporary loss of all services that remain operational via ASC. This includes services currently operating on unaffected sections of the cable system and any temporary restoration arrangements dependent on ASC remaining powered. Vocus has issued formal change notifications to affected customers outlining the anticipated service impact windows. Layer 2 Ethernet services restored via the Perth-Singapore path through Jakarta remain operational at this time. Internet traffic continues to be managed across alternate international paths, supported by the additional 100G capacity commissioned between Japan and Guam. Traffic from Perth towards Port Hedland, Christmas Island and Anyer, Indonesia also remains operational ahead of the planned ASC power-down. Unprotected wavelength services affected by the original ASC fault remain unavailable and are expected to remain so until the permanent cable repair is completed and services can be restored. Vocus is coordinating network restoration and traffic management activities to minimise disruption during the ASC repair. The restored Indigo West path is expected to provide additional resilience and capacity during this period, reducing reliance on existing alternate routes. The revised ASC repair completion date remains subject to confirmation following vessel arrival and assessment of conditions at the repair site. Subsea cable repairs remain dependent on marine operating conditions, weather and the condition of the cable once recovered. Our priority remains the safe completion of the repair and restoration of affected customer services as quickly as possible.
ASC repair to start 3 November after INDIGO-West, completion targeted for 11 November
Vocus says permits are in place and the repair ship leaves Singapore on 23 October. It will repair INDIGO-West first (target 1 November), then start on ASC on 3 November, aiming to finish by 11 November. Dates depend on vessel operations, weather and the condition of the cable once recovered. Repairing ASC means powering down parts of the system, so there will be planned service interruptions during the repair; Vocus is notifying affected customers individually. Until then, Layer 2 Ethernet services run via Jakarta and internet traffic uses other paths, helped by an extra 100G between Japan and Guam. Unprotected wavelength services stay down until the permanent repair. Vocus still places the break in Indonesian waters, about 615 km from the Singapore landing station.
Repair now expected around 11 November after repair ship delay
Vocus says the repair ship's departure from Singapore has been delayed to around 22 October. It will repair INDIGO-West first (expected around 1 November), then move to the ASC break about 615 km from Singapore. ASC repair work is expected to start around 3 November and finish around 11 November, subject to permits, weather and the condition of the cable. Parts of the system will be powered down during the repair, causing planned outages for some customers. Unprotected wavelength services stay unavailable until the repair is done; other traffic remains on temporary routes, including via Jakarta.
Vocus: ASC repair to start around 25 Oct, completion targeted for 4 Nov
Vocus says testing from the Perth and Singapore landing stations places the break in Indonesian waters, about 615 km from the Singapore landing station. Vocus agreed to repair INDIGO-West first, because repairing ASC means powering down the section now carrying restored services via Jakarta. The repair vessel is due to leave Singapore on 11 October, finish INDIGO-West around 24 October, then start the ASC repair around 25 October. Vocus is targeting completion on 4 November, depending on Indonesian permits, weather and the cable's condition.
Repair expected to be completed on 4 November
Vocus has agreed to sequence the INDIGO-West repair ahead of ASC, which it says gives the best overall restoration outcome.
Fault located about 615 km from the Singapore landing station
Vocus says the break is in Indonesian waters.
Layer 2 Ethernet services temporarily restored via Jakarta
Vocus says an additional network path between Singapore and Jakarta allowed temporary restoration of Layer 2 Ethernet services.
Both direct Perth–Singapore cables out of service
With INDIGO-West already down, reports say Perth–Singapore traffic is taking longer routes, including via the United States.
Vocus reports a break on ASC between Anyer and Singapore
Supports: impact
Supports: status, impact
Supports: impact
Supports: fault confirmed, status, fault location, repair estimate
Supports: status, repair estimate, impact
“We observed short flaps occurring on the ASC submarine cable system at 04/09/2026 03:50:33 UTC. However a hard down event followed at 04/09/2026 06:19:12 UTC Due to the Indigo West cable system also being offline for shunt fault repairs, traffic will take a longer path which will result in higher latency between Australia and Singapore.”
Supports: repair estimate
Supports: status, repair estimate, impact
“Repairs for the ASC cable system are estimated to be completed by November 4, 2026”
Supports: status
Supports: status, fault location, repair estimate, impact
“3 November: Planned commencement of ASC marine repair activities. 11 November: Target completion of ASC repair... Repairing ASC requires sections of the system to be powered down and will result in planned service impacts.”
Compiled from the linked sources. Last reviewed . How corrections work
Shown for context. An earthquake or storm nearby is only given as the cause when a source says so, and outage signals show connectivity dropped somewhere in a country, not which cable.