Check a site

DNS, TCP, TLS and HTTP, from nine regions at once.

Hostname Port

From New York San Francisco São Paulo London Johannesburg Bangalore Singapore Tokyo Sydney

Each line runs from a probe to where the site answered it, placed from a GeoIP database and kept only when the connect time allows it. Sites behind anycast or a CDN answer from somewhere near each probe, so the probe's card says how near instead of drawing a line.