Iridium® Satellite Network
Coverage Everywhere
About Iridium
Iridium operates the largest and most technologically advanced satellite network in the world, making it the only network to offer coverage over every inch of the planet. Uniquely, Iridium satellite coverage spans the North and South Poles and every inch of land, sea or sky in between. Why take chances with one-way devices, spotty coverage, or latency that leaves you wondering if your message got through? Hundreds of thousands of people rely on Iridium to provide a connection where nothing else does -- you can too.
ZOLEO is Iridium Connected
ZOLEO is Iridium Connected
ZOLEO devices are Iridium Connected™ so you can be assured that you’ll have access to the farthest reaching and most reliable satellite network in the world*, when you need it!
How Does Iridium Cover the Entire Earth?
The Iridium constellation consists of 66 low-earth orbiting (LEO), cross-linked satellites operating as a fully meshed network. That’s more satellites than any other constellation and one of the things that makes Iridium unique. Several overlapping satellites ensure the entire globe is covered, and this is one of the many reasons that tough customers, like the U.S. military, rely on Iridium.
About the Iridium Satellite Constellation
The Iridium constellation consists of a fully meshed network of 66 low-earth orbiting (LEO) cross-linked satellites, and 9 in-orbit spares ready to replace any unserviceable satellite. This is how Iridium ensures that every region on the globe is covered by at least one satellite at all times. Iridium satellites orbit at an altitude of 485 miles (780 km), circling the earth once every 100 minutes, travelling at 16,832 miles per hour. Each satellite is cross-linked to four other satellites; two satellites in the same orbital plane and two in an adjacent plane. These links create a dynamic network in space. Messages are routed among Iridium satellites without touching the ground, creating a highly secure and reliable connection. Cross-links also make the Iridium network particularly impervious to natural disasters — such as hurricanes, tsunamis and earthquakes - which can damage traditional land-lines and cell towers.
*Note: ZOLEO transmits over the Iridium network. Although the coverage of Iridium is global, travelers are advised to contact local consulate or customs office for information on any restrictions which may prohibit use. View coverage details.