MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
ES
IEEE Registrant 2 Prefixes
Esys Srl
Esys Srl manages 2 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 09 June 2021, and the most recent update was made on 14 July 2026. These allocations support network identification and communication globally.
Unique prefixes 2
Block Size 1052670 (1.05 M)
First registration 09 June 2021
Last updated 14 July 2026
Entity Details
Unique prefixes 2
Block Size 1052670 (1.05 M)
First registration 09 June 2021
Last updated 14 July 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 |
|---|---|---|
| 8C:1F:64:C1:F | MA-S | 2021-06-09 |
| CC:39:53:2 | MA-M | 2026-07-14 |