MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
MAC address B8:F4:53:7 (Valthor, s.r.o.)
MAC address prefix B8:F4:53:7 is registered to Valthor, s.r.o., located at Na Groši 1344/5a, Praha 10 102 00, CZ. This registration is classified as MA-M (MAC Address Block Medium) containing 1,048,576 MAC addresses (2^20). The prefix was registered on 30 October 2026, and no subsequent updates have been recorded.
Vendor & Registry Dossier
Assigned Prefix
B8:F4:53:7
Registrant / Organization
Registry Chronology
Initial registration: 30 October 2026
Assignment Classification
MA-M
(MAC Address Block Medium) containing 1,048,576 MAC addresses (2^20)
Registered Location
Country: Czechia (CZ)
Headquarters Registered Facility 🇨🇿 CZ
Na Groši 1344/5a
Praha 10 102 00
CZ.
Praha 10 102 00
CZ.
REST API v2
200 OK
CLI
curl -s https://api.maclookup.app/v2/macs/b8f4537 -H 'Accept: application/json'{
"success": true,
"found": true,
"macPrefix": "B8F4537",
"company": "Valthor, s.r.o.",
"address": "Na Groši 1344/5a, Praha 10 102 00, CZ",
"country": "CZ",
"blockStart": "B8F453700000",
"blockEnd": "B8F4537FFFFF",
"blockSize": 1048575,
"blockType": "MA-M",
"updated": "2026-10-30",
"isRand": false,
"isPrivate": false
}