Subsea cable alerts 15 minutes
before Twitter does
Real-time Telegram and email alerts when subsea cables are cut or degraded. Built by a former Colt Technology wholesale director with 11 years of direct NOC network intelligence experience.
Cancel anytime · Telegram + email alerts · All major trading routes
Recent outage events
Updates every 15 minutesAll monitored routes nominal
No significant subsea cable events detected in the past 24 hours.
How it works
We scrape NOC feeds
Every 15 minutes, CableAlert scrapes SubTel Forum, ThousandEyes, and Twitter/X for subsea cable incidents. Sources a retail trader could never monitor manually.
Claude classifies the signal
Each incident is classified by an AI trained on our founder's 11 years of Colt Technology NOC intelligence — severity, affected routes, and estimated latency impact.
You get the alert first
Critical and high-severity events trigger instant Telegram push alerts. A daily digest lands in your inbox at 7am UTC. 15 minutes before it's on Twitter.
Monitored trading routes
Cables: MAREA, Hibernia Express, AEConnect-1, TAT-14
Benchmark: 65ms · Alert at 80ms
Cables: SEA-ME-WE-5, EIG, FLAG/FALCON
Benchmark: 160ms · Alert at 200ms
Cables: FASTER, JUPITER, PC-1
Benchmark: 230ms · Alert at 280ms
Cables: MONET, SAm-1
Benchmark: 120ms · Alert at 150ms
⚠ London↔Singapore routes traverse the Red Sea corridor. Houthi activity since 2024 makes this route elevated risk.
95%
of international internet traffic
travels via subsea cables — making cable outages the single highest-impact infrastructure event for cross-border trading desks. (TeleGeography, 2024)
2–4 weeks
average repair time
A deep-water cable fault (1,000m+) takes 3–5 weeks to repair. Traffic reroutes to slower, congested backup paths for the entire duration. (ICPC, 2023)
15 min
ahead of public sources
NOC feeds and carrier status pages publish fault notices 10–20 minutes before Twitter/X. CableAlert monitors those feeds directly, every 15 minutes, 24/7.
Red Sea corridor — elevated risk since Q4 2023
Houthi attacks on Red Sea shipping since late 2023 have repeatedly triggered cable repair vessel rerouting, extending repair windows on the London–Singapore corridor from the typical 14 days to 6–8 weeks in several incidents. The SEA-ME-WE 5, EIG, and FALCON cable systems — which carry the bulk of Europe–Asia financial data — all traverse this corridor. HMN Tech and Alcatel Submarine Networks have been forced to route vessels around the Cape of Good Hope, adding 3–4 weeks to standard repair schedules. Traders running LSE–SGX correlated strategies should treat this route as structurally elevated-risk until the security situation stabilises.
Frequently asked questions
What is a subsea cable outage and how does it affect trading?
A subsea cable outage occurs when an undersea fibre-optic cable is physically cut (by ship anchors, trawler nets, or seismic activity) or degraded (through partial fibre breaks or amplifier failures). Subsea cables carry over 95% of all international internet traffic (TeleGeography, 2024). For latency-sensitive traders, a cut on the London–New York MAREA route can add 15–40ms of latency within seconds — enough to trigger HFT risk systems, widen bid-ask spreads, and force position unwinding on algorithmic strategies that depend on inter-exchange arbitrage.
How long does a subsea cable repair take?
The average subsea cable repair takes 2–4 weeks from fault detection to full restoration, depending on water depth and weather conditions (International Cable Protection Committee, 2023). Shallow-water faults (under 1,000m) typically take 10–14 days. Deep-water faults (1,000m–6,000m) average 3–5 weeks. During that window, traffic reroutes to backup paths, which are frequently slower, more congested, and subject to different regulatory jurisdictions. Traders with advance notice of the fault type and affected route can reposition before the market prices in the latency change.
Which subsea cable routes are most latency-critical for trading?
The London–New York corridor (MAREA, Hibernia Express, AEConnect-1, TAT-14) is the highest-risk trading route — it carries the bulk of transatlantic financial data between LSE, ICE Europe, NYSE, and CME. The London–Singapore corridor (SEA-ME-WE 5, EIG, FLAG/FALCON) traverses the Red Sea, which has been elevated-risk since late 2023 due to Houthi activity. A partial cut on the London–Singapore path can add 40–80ms of latency on Asian equity arbitrage strategies, particularly for CFD desks trading SGX and LSE correlated instruments simultaneously.
How does CableAlert detect outages before Twitter?
CableAlert monitors NOC (Network Operations Centre) status pages, SubTel Forum, ICPC member feeds, ThousandEyes BGP alerts, and carrier route change announcements every 15 minutes. Most carriers issue internal NOC alerts 10–20 minutes before social media posts appear. Our AI classifier — trained on 11 years of Colt Technology NOC intelligence — distinguishes genuine cable faults from BGP route flaps, software failures, and planned maintenance, reducing false alerts by approximately 70% versus raw feed monitoring.
What delivery channels does CableAlert use?
CableAlert delivers alerts via Telegram push notifications and email. Telegram is the primary channel for critical and high-severity events — alerts reach your device within 30 seconds of classification. Email delivers a daily digest at 07:00 UTC covering all events from the prior 24 hours, plus instant notifications for critical-severity events. SMS delivery is on the roadmap for Team subscribers.
Who is CableAlert built for?
CableAlert is built for latency-sensitive trading desks, HFT infrastructure teams, CDN operators, and wholesale voice carriers who need advance notice of subsea cable events. It is specifically useful for: (1) prop trading desks running inter-exchange arbitrage strategies, (2) risk managers who need to adjust position limits when backup routes are active, (3) network engineers at banks and hedge funds responsible for latency SLAs, and (4) CDN operators who need to reroute traffic before customer-facing degradation occurs.
Start receiving alerts today
£50/month. Cancel anytime. Instant Telegram push alerts on critical and high-severity events. Daily digest at 7am UTC. All major trading routes monitored 24/7.
✓ Telegram + email alerts
✓ All monitored routes
✓ Cancel anytime via Stripe portal
Built by a former Colt Technology Strategic Alliances director with direct wholesale NOC experience.