Find the vendor name of a device by entering an OUI or a MAC address
Taicang T&W Electronics
Taicang T&W Electronics accessible at www.twsz.com, manages 45 unique MAC address prefixes. These prefixes are part of a massive allocation with a total block size of 722.5 million addresses.
The allocation includes the following types: MA-L (Mac Address Block Large, ~16 million addresses each), MA-M (Mac Address Block Medium, ~1 Million addresses each), and MA-S (Mac Address Block Small, previously named OUI-36, encompasses IAB Assignments, ~4096 addresses each).
The company registered its MAC address allocation on 22 April 2014, and the most recent update was made on 12 January 2026. These allocations support network identification and communication globally.
Unique prefixes: 45
Block Size: 722472915 (722.47 M)
First registration: 22 April 2014
Last updated: 12 January 2026
MA-L:Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)
MA-M:Mac Address Block Medium. Number of address 2^20 (~1 Million)
MA-S:Mac Address Block Small (previously named OUI-36, encompasses IAB Assignments). Number of address 2^12 (4096)
| MAC Prefix | Type | Registration Date |
|---|---|---|
| 04:25:E0 | MA-L | 2021-01-27 |
| 04:75:F9 | MA-L | 2021-10-23 |
| 14:58:08 | MA-L | 2021-06-29 |
| 18:45:93 | MA-L | 2020-03-17 |
| 18:45:B3:D | MA-M | 2021-09-25 |
| 24:0B:88 | MA-L | 2020-11-03 |
| 2C:DD:95 | MA-L | 2016-07-14 |
| 38:E3:C5 | MA-L | 2015-11-17 |
| 40:33:06 | MA-L | 2022-05-27 |
| 4C:06:17 | MA-L | 2022-10-17 |
| 4C:81:20 | MA-L | 2017-01-07 |
| 50:1B:32 | MA-L | 2019-03-08 |
| 50:88:C7 | MA-L | 2025-05-05 |
| 54:37:BB | MA-L | 2021-03-16 |
| 5C:8C:30 | MA-L | 2022-03-24 |
| 5C:F9:FD | MA-L | 2020-08-13 |
| 60:BD:2C | MA-L | 2023-05-22 |
| 64:D9:54 | MA-L | 2014-04-22 |
| 6C:C6:3B | MA-L | 2019-10-23 |
| 74:3C:18 | MA-L | 2019-07-25 |
| 78:4F:24 | MA-L | 2022-07-27 |
| 80:49:BF | MA-L | 2025-08-25 |
| 80:AE:3C | MA-L | 2025-06-25 |
| 84:C6:65 | MA-L | 2026-01-12 |
| 8C:1F:64:FF:B | MA-S | 2025-06-03 |
| 90:03:2E | MA-L | 2024-06-03 |
| 90:0A:1A | MA-L | 2017-03-29 |
| A0:9B:17 | MA-L | 2020-04-25 |
| A4:1E:E1 | MA-L | 2022-01-19 |
| AC:37:28 | MA-L | 2020-09-12 |
| B4:26:5D | MA-L | 2019-09-10 |
| C4:48:FA | MA-L | 2021-09-04 |
| C8:9C:BB | MA-L | 2023-08-03 |
| D0:0E:D9 | MA-L | 2015-11-17 |
| D8:B0:20 | MA-L | 2023-10-19 |
| E0:3D:A6 | MA-L | 2025-01-04 |
| E4:DA:DF | MA-L | 2021-12-21 |
| E8:D0:B9 | MA-L | 2019-06-12 |
| EC:A2:A0 | MA-L | 2023-04-03 |
| F0:68:65 | MA-L | 2019-04-29 |
| F4:9E:EF | MA-L | 2016-02-10 |
| F8:0C:58 | MA-L | 2021-05-11 |
| F8:44:E3 | MA-L | 2017-04-18 |
| F8:6C:E1 | MA-L | 2017-08-20 |
| FC:10:C6 | MA-L | 2016-09-08 |