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Check-Host vs Is It Down Right Now: catalog facts
Check-Host	Is It Down Right Now
Free The checks are used in the browser at no cost.	Free Free to use in the browser.
Web	Web
Checks run from many locations around the world at once Covers ping, HTTP, TCP, UDP and DNS in one place	Live check for any domain you enter Response time graphs per site
Web service only, with no self-hosted version Page carries advertising for hosting services	Checks basic availability only No alerts or ongoing monitoring of your own sites
Web application	Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.