eIS Registered Companies and EIN List
GSMA has issued the EIN (eUICC Identification Number) to the following companies:
| Company | EIN |
| Workz Media FZ LLC | 35797 |
| Beijing Tsingteng Microsystem Co., Ltd. | 35614 |
| Card Centric | 35767 |
| CEC Hauda | 35060 |
| Huwei | 35036 |
| Kigen | 35907 |
| NXP | 35265, 35499 |
| Redtea Mobile | 35203 |
| Tongxi Microelectronics Co., Ltd. | 35281 |
| WatchData | 35840 |
| XH Smart Tech | 35865 |
| Reserved for Test | 350000-9 |