Windows/System32/checkdnsid.xml file

Hello

I recently searched for any modified / created files in system32 windows directory, and I've found such file:

checkdnsid.xml

It contains simply one value with some number. I don't know what could create this file. I scanned my PC with Combofix, Kaspersky Malware scanner, Bitdefender, MSE and those programs did not found any suspicious files on my PC.

When I google for this file, it exists in many OTL reports.

Has anyone have any idea what is this file, what for it is created and am I on the safe side?
 
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