How Much of the World’s Internet Passes Through the Strait of Hormuz?
The Strait of Hormuz is famous for oil and global shipping, but many people don’t realize it is also important for international internet connectivity. While it does not carry most of the world’s internet traffic, several critical submarine fiber-optic cables pass through or near this narrow waterway, making it strategically important for digital communication across the Middle East and Asia.
Experts estimate that only a small percentage of total global internet traffic directly depends on cables routed through the Strait of Hormuz region. However, for countries in the Gulf region, the dependency is much higher. Nations such as the UAE, Oman, Qatar, Bahrain, Kuwait, and parts of Saudi Arabia rely heavily on these undersea cables for international internet access.
What Is the Strait of Hormuz?
The Strait of Hormuz is a narrow water passage located between Iran and Oman. It connects the Persian Gulf to the Arabian Sea and the Indian Ocean. At its narrowest point, it is only around 33 kilometers wide.
This strait is one of the most strategically important waterways in the world because:
Around 20% of the world’s oil supply passes through it.
Massive cargo shipping routes depend on it.
Important submarine communication cables are laid on the seabed nearby.
Because modern internet depends heavily on undersea fiber-optic cables, this region has become a crucial digital corridor.
How Does the Internet Travel Under the Ocean?
More than 95% of international internet data travels through submarine fiber-optic cables, not satellites. These cables are laid across oceans and seas to connect continents.
When you:
watch YouTube,
send WhatsApp messages,
use cloud storage,
play online games,
or make international calls,
your data often travels thousands of kilometers through these underwater cables.
The Middle East acts as a bridge between:
Europe,
Asia,
and Africa.
Because of this geographic position, many cable systems cross waters near the Strait of Hormuz.
How Many Internet Cables Pass Through the Region?
Several major submarine cable systems operate in the Gulf region, including:
SEA-ME-WE cables (South East Asia–Middle East–Western Europe)
FLAG Telecom
Gulf Bridge International
AAE-1
TGN Gulf
IMEWE
These cables connect countries from Europe to India, Southeast Asia, and East Asia.
While not all cables physically pass through the exact center of the Strait of Hormuz, many routes pass through nearby Gulf waters and landing stations in Oman, the UAE, Qatar, and Bahrain.
What Percentage of Global Internet Traffic Passes Through Hormuz?
There is no universally agreed official number because internet traffic constantly changes and data routing is dynamic. However, analysts generally agree on these points:
Global Perspective
Only a small fraction of total world internet traffic passes specifically through the Strait of Hormuz region. Estimates are usually believed to be well below 10% globally.
This is because:
The world has hundreds of undersea cables.
Large traffic volumes also travel through the Atlantic and Pacific Oceans.
Europe-America internet traffic mostly bypasses the Gulf entirely.
Regional Perspective
For Gulf countries, the importance is enormous.
Some Gulf nations rely on these routes for:
70–90% of their international internet connectivity.
Cloud computing access.
Financial transactions.
International communications.
A disruption could severely affect:
banking systems,
airlines,
stock markets,
oil companies,
and mobile networks.
Why Is the Strait of Hormuz So Important Digitally?
The Gulf region sits at the crossroads of global connectivity.
Data traveling between:
Europe and India,
Europe and Southeast Asia,
or Europe and East Asia
often takes routes through the Middle East because it can be shorter and faster than other alternatives.
This makes the region a valuable “internet bridge” between continents.
Countries like Oman and the United Arab Emirates have become major cable landing hubs because of their geographic position.
What Happens If Cables Are Damaged?
Undersea internet cables can be damaged by:
ship anchors,
fishing equipment,
earthquakes,
underwater landslides,
or geopolitical conflict.
If major cables near Hormuz were disrupted:
Internet speeds in Gulf countries could slow dramatically.
International calls and banking services might be affected.
Data centers and cloud services could experience outages.
However, modern internet infrastructure has redundancy systems. Traffic can often be rerouted through:
other submarine cables,
satellite links,
or terrestrial fiber routes.
Still, rerouting usually means:
slower speeds,
higher latency,
and reduced network reliability.
Military and Geopolitical Importance
Because both oil shipments and communication cables pass through the region, the Strait of Hormuz has become one of the world’s most sensitive geopolitical hotspots.
Global powers monitor the area closely because disruption could affect:
energy prices,
international trade,
financial markets,
and digital communications.
Cybersecurity experts and governments consider submarine cables critical infrastructure.
In recent years, many countries have invested in:
backup cable routes,
alternative land-based fiber routes,
and satellite internet systems
to reduce dependence on single choke points.
Future of Internet Connectivity in the Region
The demand for internet bandwidth is growing rapidly because of:
AI,
cloud computing,
video streaming,
online gaming,
and smart cities.
New submarine cable projects are continuously being developed across the Middle East and Indian Ocean.
Tech companies and telecom operators are building:
higher-capacity fiber cables,
more secure routes,
and diversified pathways.
Even with satellite internet technologies like low-Earth orbit systems, submarine cables will likely remain the backbone of the global internet for decades.
Conclusion
The Strait of Hormuz is far more than an oil shipping route — it is also an important part of the world’s digital infrastructure. Although only a relatively small percentage of total global internet traffic passes through the region, the Gulf states depend heavily on these undersea cables for international connectivity.
Its strategic location between Europe and Asia makes the region a major communication corridor. Any disruption could have serious economic and technological consequences, especially for Middle Eastern countries.
As global internet usage continues to expand, the importance of secure and resilient submarine cable networks near the Strait of Hormuz will only grow in the future.
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