In apple products serial number, the first three is "Factory and machine ID", for example, c3 means China, where I can find the whole factory and code comparison table?

  • Just out of interest, why do you need it.
    – Ruskes
    Commented May 16, 2013 at 10:14
  • The S/N has been decoded and some websites provide a query service, for example: appleserialnumberinfo.com/Desktop/index.php and chipmunk.nl/klantenservice/applemodel.html. Both return a wealth of information. The first URL returned: Build Country: This unit was built in China for my Mac S/N, the second: Factory: C0 (Quanta Computer (Susidiary = Tech Com)). Unfortunately, the factory table seems to be a well guarded secret.
    – jaume
    Commented May 16, 2013 at 10:59
  • my guess is building a superior lookup service for affiliate sales ;)
    – ptim
    Commented May 16, 2013 at 11:09
  • 2
    Feel free to explain more how a user of Apple products will find this useful. Just like developers calling private API - when something isn't documented publicly, it can be counted on to change and break. The obvious answer is this is merely a spreadsheet somewhere in Cupertino and we're all trying to read tea leaves from limited data.
    – bmike
    Commented May 16, 2013 at 11:47
  • Why are we supporting this? It is obvious that Apple does not want this information to be public to protect they OEM status from COPY cats. Someone from China wants to know where each of the components of Apple products is made! Guess why !
    – Ruskes
    Commented May 17, 2013 at 7:56

2 Answers 2


Interesting question - a quick search didn't turn up much, but there's a site you can do lookups on: http://www.chipmunk.nl/klantenservice/applemodel.html and a macrumours forum where a few people have posted their info..

Here's a list of factories mentioned in the forum above (plus mine):

  • Factory: DL (China - Foxconn)
  • Factory: DM (China - Foxconn)
  • Factory: DN (China, Chengdu - Foxconn)
  • Factory: C0 (Quanta Computer (Susidiary = Tech Com))

Another site offers lookups, too, but didn't have info for my 2013 MBP: http://www.appleserialnumberinfo.com. They have some interesting but unrevealing javascript validation for their lookup form..


There is an image attached in this forum post which explains a few more details:

enter image description here

The image was a screenshot taken before Apple asked the site to remove the original article.


You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .