2026-08-01 crawl · observed, not inferred
Technology used by a21.cz
Dovolená po celý rok s CK A21
13
technologies detected
Full detected stack
Everything detected on this domain in the latest monthly crawl, grouped by what it does. ↩ marks when we first observed it — no later than that date, not necessarily when they adopted it. Faded dates were seen in fewer than four crawls.
JavaScript libraries
Analytics
Miscellaneous
Operating systems
Web frameworks
Web servers
Webmail
Tag managers
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