Free Tool

Is Your Website Down?

Check from 17 regions across 6 continents. See DNS, TCP, TLS, and TTFB breakdown — instantly.

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17 regions · 6 continents

What You'll Get

Every check measures four phases of the connection from 17 locations worldwide

DNS Lookup

Time to resolve the domain name to an IP address

TCP Connect

Time to establish a network connection to the server

TLS Handshake

Time to negotiate the encrypted HTTPS connection

Time to First Byte

Time until the server sends its first byte of response

17 global regions

Results in seconds

No account required

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Get these same multi-region checks running automatically, around the clock — at intervals as fast as every 30 seconds. Before alerting, other regions re-check a failure; if any of them sees the site up, no alert goes out.

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