I have used Certn before to check references, but it was just for personal use only. The benefits of using Certn is that you get multiple reports from different sources which gives you an idea about what your potential employer wants in their employee profile. Also, you never know when someone changes their information on another website such as LinkedIn or Facebook. This has happened with me too many times where my previous employers changed their details without telling us so this could affect our hiring decision. It's really helpful if you're looking for job opportunities overseas because it helps narrow down your search criteria very quickly.
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