ID yourself

This is the list of what the two digit number in your IC stands for:

 Malaysia States Code
23,21,22,23,24,01: Johor
27,26,25,02: Kedah
   29,28,03: Kelantan
      30,04: Malacca
   59,31,05: Negeri Sembilan
   33,32,06: Pahang
   35,34,07: Penang
39,38,37,36,08: Perak
      40,09: Perlis
44,43,42,41,10: Selangor
   46,45,11: Terengganu
49,48,47,12: Sabah
53,52,51,50,13: Sarawak
57,56,55,54,14: Federal Territory of Kuala Lumpur
      58,15: Federal Territory of Labuan
         16: Federal Territory of Cyberjaya & Putrajaya

The most commonly used numbers are the last one. Eg.13 for Sarawak. I've never seen the other numbers come into use before.

Other Countries Code

               66: Singapore
              60: Brunei
              71: United Kingdom,
              91: United States,
              86: The Netherlands
              77: Saudi Arabia

Odd number in the last digit usually indicates the card holder being male, and even numbers for female.