Some companies, when they list their job openings on Taleo ATS (Applicant Tracking System), create publicly available testing ("tst") or staging ("stg") environments.
For example:
https://stgbrinker.taleo.net/careersection/brinker_salary_mobile/jobsearch.ftl

https://tstfidelity.taleo.net/careersection/10021/jobsearch.ftl

Google happily crawls these testing and staging environments:
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https://www.google.com/search?q=site%3Astgbrinker.taleo.net
59 results
~~~~~~~~~~~~~~~
https://www.google.com/search?q=site%3Atstfidelity.taleo.net
50 results
~~~~~~~~~~~~~~~

What do you think: why these Testing and Staging environments are public?

Meanwhile, core production environments are available too:
https://brinker.taleo.net/careersection/brinker_salary_mobile/jobsearch.ftl
https://fidelity.taleo.net/careersection/10021/jobsearch.ftl