MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
AR
IEEE Registrant 4 Prefixes
Active Research Limited
Active Research Limited manages 4 unique MAC address prefixes. These prefixes have a total block size of 1.1 million addresses.
The allocation includes the following types: MA-M(MAC Address Block Medium, 1,048,576 addresses each) and MA-S(MAC Address Block Small, previously named OUI-36, encompasses IAB assignments, 4,096 addresses each).
The company registered its MAC address allocation on 24 April 2016, and the most recent update was made on 05 May 2026. These allocations support network identification and communication globally.
Unique prefixes 4
Block Size 1060860 (1.06 M)
First registration 24 April 2016
Last updated 05 May 2026
Entity Details
Unique prefixes 4
Block Size 1060860 (1.06 M)
First registration 24 April 2016
Last updated 05 May 2026
Types
MA-M: Block Type
Mac Address Block Medium. Number of address 2^20 (~1 Million)MA-S: Block Type
Mac Address Block Small (previously named OUI-36, encompasses IAB Assignments). Number of address 2^12 (4096)Registered MAC Prefixes
All Organizationally Unique Identifiers and MAC ranges assigned to this vendor
| MAC Prefix | Type | Registration Date |
|---|---|---|
| 70:B3:D5:6A:0 | MA-S | 2016-04-24 |
| 8C:1F:64:0C:0 | MA-S | 2022-03-01 |
| 8C:1F:64:5C:5 | MA-S | 2024-10-16 |
| F8:C9:D6:4 | MA-M | 2026-05-05 |