MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
MAC address B4:E8:5C (fünfeinhalb Funksysteme GmbH)
MAC address prefix B4:E8:5C is registered to fünfeinhalb Funksysteme GmbH, located at Chemnitzer Straße 78A, Dresden Saxony 01187, DE. This registration is classified as MA-L (MAC Address Block Large) containing 16,777,216 MAC addresses (2^24). The prefix was initially registered on 28 October 2024, with the most recent update made on 12 May 2025.
Vendor & Registry Dossier
Assigned Prefix
B4:E8:5C
Registrant / Organization
Registry Chronology
Initial registration: 28 October 2024
Last updated: 12 May 2025
Assignment Classification
MA-L
(MAC Address Block Large) containing 16,777,216 MAC addresses (2^24)
Registered Location
Country: Germany (DE)
Headquarters Registered Facility 🇩🇪 DE
Chemnitzer Straße 78A
Dresden Saxony 01187
DE.
Dresden Saxony 01187
DE.
REST API v2
200 OK
CLI
curl -s https://api.maclookup.app/v2/macs/b4e85c -H 'Accept: application/json'{
"success": true,
"found": true,
"macPrefix": "B4E85C",
"company": "fünfeinhalb Funksysteme GmbH",
"address": "Chemnitzer Straße 78A, Dresden Saxony 01187, DE",
"country": "DE",
"blockStart": "B4E85C000000",
"blockEnd": "B4E85CFFFFFF",
"blockSize": 16777215,
"blockType": "MA-L",
"updated": "2025-05-12",
"isRand": false,
"isPrivate": false
}