West Central US · Cheyenne, Wyoming, US. How long a round trip from your machine to this region takes — and how much of that distance alone demands.
| Cloud | Microsoft Azure |
|---|---|
| Region code | westcentralus |
| Region name | West Central US |
| Datacentre city | Cheyenne, Wyoming, US |
| Coordinates | 41.14, -104.82 |
| Published IPv4 prefixes | 594 |
| Probe endpoint | https://westcentralus.handler.control.monitor.azure.com/ |
| Probe style | timed blind — the endpoint sends no CORS headers |
| Verification | Resolved to an address inside this region’s own published range, TCP 443 open. Checked 2026-08-21. |
Coordinates are the real datacentre city rather than the marketing region name, because they feed the distance maths below.
Light in fibre covers about 100 km per millisecond of round trip. These are the great-circle distances to Cheyenne, Wyoming and the latency no network can beat — not a measurement, a limit. What you actually measure is this plus routing.
| From | Distance | Floor |
|---|---|---|
| New York | 2,575 km | 26 ms |
| Los Angeles | 1,418 km | 14 ms |
| São Paulo | 9,363 km | 94 ms |
| London | 7,413 km | 74 ms |
| Frankfurt | 7,985 km | 80 ms |
| Johannesburg | 15,412 km | 154 ms |
| Dubai | 12,358 km | 124 ms |
| Mumbai | 13,315 km | 133 ms |
| Singapore | 14,476 km | 145 ms |
| Tokyo | 9,241 km | 92 ms |
| Sydney | 13,474 km | 135 ms |
The closest regions to Cheyenne, Wyoming on any cloud, with the distance between them and the floor that distance sets.
These figures are geometry. Your own round trip to westcentralus depends on your connection and the route it takes — open the instrument, pick Azure, and sweep. Every region is timed from your browser against the endpoint listed above, and the result is split into the part physics demands and the part the network added.
See every Azure region on the Azure latency page.