MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
FF
IEEE Registrant 1 Prefix
fünfeinhalb Funksysteme GmbH
fünfeinhalb Funksysteme GmbH manages 1 unique MAC address prefix. These prefixes have a total block size of 16.8 million addresses.
The allocation includes the following types: MA-L(MAC Address Block Large, 16,777,216 addresses each).
The company registered its MAC address allocation on 28 October 2024, and the most recent update was made on 12 May 2025. These allocations support network identification and communication globally.
Unique prefixes 1
Block Size 16777215 (16.77 M)
First registration 28 October 2024
Last updated 12 May 2025
Entity Details
Unique prefixes 1
Block Size 16777215 (16.77 M)
First registration 28 October 2024
Last updated 12 May 2025
Types
MA-L: Block Type
Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)Registered MAC Prefixes
All Organizationally Unique Identifiers and MAC ranges assigned to this vendor
| MAC Prefix | Type | Registration Date |
|---|---|---|
| B4:E8:5C | MA-L | 2024-10-28 |