What does model name means for MacBook Pro? From my local Apple reseller I get a model name of MacBook Pro I'm interested in.

MacBook Pro MR942

But US apple.com site doesn't have this model for MacBook Pro of the same configuration.

What does it mean? Fake MacBook?

How to read that model name?

Does Apple have some search engine (some special page or application) where I can type MacBook's model name and get full info about the device?

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The MR942 designator is most likely a partial Apple Manufacture Part Number, e.g.: MR942LL/A

From CDW, an Apple Authorized Reseller, in the image below see the yellow highlighted section.





According to Mactracker, a MacBook Pro with MR942 which they call it an Order Number, and which by the way is an incomplete Order Number, e.g. MR942LL/A, is a MacBook Pro (15-inch, 2018) 2.6 GHz Space Gray, as shown in the yellow highlighted section of the image below. 

Mactracker is probably mistakenly calling an Apple Manufacture Part Number an Order Number.





Looking on the box my MacBook Pro came in, this convention corresponds to what's labeled as "(1P) Part No.", albeit a different sequence nonetheless, it matches the pattern of ?????LL/A and as such MR942 is in all likelihood a partial Apple Manufacture Part Number.