Tap a link and the answer arrives before you blink. But the request takes a real route — up a mast, into buried glass, often under an ocean. Here is every leg of it.
Your phone never sends a web page anywhere. It sends a short request — a few hundred bytes asking a server, by name, for a file. Everything after this is delivery.
The request leaves as a radio signal aimed at the nearest cell site. In a city that mast may be 500 metres off; in open country, several miles. That is the whole wireless part.
At the tower's base the signal becomes light in a buried fibre. From here on, your request travels as pulses of glass-guided light — not through the air.
Names mean nothing to the network. A DNS server turns the site's name into a numeric address in a few milliseconds — or in none at all, if your phone already cached it.
No single company owns the route. Carriers meet at internet exchanges and pass traffic to each other — rooms where thousands of fibres are patched network to network.
Large sites copy their pages onto servers scattered worldwide. Your request usually ends at one a few hundred kilometres away — which is why distant brands still load fast.
Satellites carry very little of this. More than 99% of international traffic runs through undersea cables — some 1.5 million km of them, laid and mended by ships like this.
Every cable ends at a landing station — an unmarked building wired to the sea. The 2026 cable map counts 694 systems reaching land at about 1,893 such points.
A machine in a rack like this reads the request, assembles the page, and sends it back the same way — cable, exchange, fibre, mast, screen. The return trip is the longer half.
Light in glass moves at about two-thirds its speed in a vacuum. That sets a floor: New York to London and back cannot beat roughly 60 milliseconds, whoever lays the cable.