Asia Pacific (Seoul) · Seoul, KR. How long a round trip from your machine to this region takes — and how much of that distance alone demands.
| Cloud | Amazon Web Services |
|---|---|
| Region code | ap-northeast-2 |
| Region name | Asia Pacific (Seoul) |
| Datacentre city | Seoul, KR |
| Coordinates | 37.57, 126.98 |
| Published IPv4 prefixes | 266 |
| Probe endpoint | https://dynamodb.ap-northeast-2.amazonaws.com/ |
| Probe style | a CORS request whose reply the page can read |
| 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 Seoul 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 | 11,052 km | 111 ms |
| Los Angeles | 9,586 km | 96 ms |
| São Paulo | 18,342 km | 183 ms |
| London | 8,857 km | 89 ms |
| Frankfurt | 8,550 km | 85 ms |
| Johannesburg | 12,488 km | 125 ms |
| Dubai | 6,784 km | 68 ms |
| Mumbai | 5,595 km | 56 ms |
| Singapore | 4,673 km | 47 ms |
| Tokyo | 1,149 km | 11 ms |
| Sydney | 8,330 km | 83 ms |
Within 75 km of Seoul — near enough that distance sets no meaningful floor between them. When several sit in one city, the fastest is the city’s real floor; a slower neighbour is usually the endpoint’s own server time.
These figures are geometry. Your own round trip to ap-northeast-2 depends on your connection and the route it takes — open the instrument, pick AWS, 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 AWS region on the AWS latency page.