Pentesting

MacOS Serial Number

Apple devices manufactured after 2010 generally have 12-character alphanumeric serial numbers, with the first three digits representing the manufacturing location, the following two indicating the year and week of manufacture, the next three digits providing a unique identifier, and the last four digits representing the model number.

Serial number example: C02L13ECF8J2

3 - Manufacturing locations

Code

Factory

FC

Fountain Colorado, USA

F

Fremont, California, USA

XA, XB, QP, G8

USA

RN

Mexico

CK

Cork, Ireland

VM

Foxconn, Pardubice, Czech Republic

SG, E

Singapore

MB

Malaysia

PT, CY

Korea

EE, QT, UV

Taiwan

FK, F1, F2

Foxconn – Zhengzhou, China

W8

Shanghai China

DL, DM

Foxconn – China

DN

Foxconn, Chengdu, China

YM, 7J

Hon Hai/Foxconn, China

1C, 4H, WQ, F7

China

C0

Tech Com – Quanta Computer Subsidiary, China

C3

Foxxcon, Shenzhen, China

C7

Pentragon, Changhai, China

RM

Refurbished/remanufactured

1 - Year of manufacturing

Code

Release

C

2010/2020 (1st half)

D

2010/2020 (2nd half)

F

2011/2021 (1st half)

G

2011/2021 (2nd half)

H

2012/... (1st half)

J

2012 (2nd half)

K

2013 (1st half)

L

2013 (2nd half)

M

2014 (1st half)

N

2014 (2nd half)

P

2015 (1st half)

Q

2015 (2nd half)

R

2016 (1st half)

S

2016 (2nd half)

T

2017 (1st half)

V

2017 (2nd half)

W

2018 (1st half)

X

2018 (2nd half)

Y

2019 (1st half)

Z

2019 (2nd half)

1 - Week of manufacturing

The fifth character represent the week in which the device was manufactured. There are 28 possible characters in this spot: the digits 1-9 are used to represent the first through ninth weeks, and the characters C through Y, excluding the vowels A, E, I, O, and U, and the letter S, represent the tenth through twenty-seventh weeks. For devices manufactured in the second half of the year, add 26 to the number represented by the fifth character of the serial number. For example, a product with a serial number whose fourth and fifth digits are “JH” was manufactured in the 40th week of 2012.

3 - Uniq Code

The next three digits are an identifier code which serves to differentiate each Apple device of the same model which is manufactured in the same location and during the same week of the same year, ensuring that each device has a different serial number.

4 - Serial number

The last four digits of the serial number represent the product’s model.

Reference