MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
HH
IEEE Registrant 2 Prefixes
Hangzhou Hollysys Automation Co., Ltd
Hangzhou Hollysys Automation Co., Ltd manages 2 unique MAC address prefixes. These prefixes have a total block size of 17.8 million addresses.
The allocation includes the following types: MA-L(MAC Address Block Large, 16,777,216 addresses each) and MA-M(MAC Address Block Medium, 1,048,576 addresses each).
The company registered its MAC address allocation on 13 May 2007, and the most recent update was made on 26 November 2024. These allocations support network identification and communication globally.
Unique prefixes 2
Block Size 17825790 (17.82 M)
First registration 13 May 2007
Last updated 26 November 2024
Entity Details
Unique prefixes 2
Block Size 17825790 (17.82 M)
First registration 13 May 2007
Last updated 26 November 2024
Types
MA-L: Block Type
Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)MA-M: Block Type
Mac Address Block Medium. Number of address 2^20 (~1 Million)Registered MAC Prefixes
All Organizationally Unique Identifiers and MAC ranges assigned to this vendor
| MAC Prefix | Type | Registration Date |
|---|---|---|
| 00:1C:47 | MA-L | 2007-05-13 |
| 90:88:A9:3 | MA-M | 2024-11-26 |