OUI Lookup
001d21
Alcad SL
Manufacturer Information
- OUI Prefix
- 001d21
- Manufacturer
- Alcad SL
- Address
- Pol. Ind. Arreche-Ugalde, 1 Irún Guipúzcoa ES E-20305
- Last updated
- 6/9/2026
Vendor Statistics
- Total prefixes
- 1
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix 001D21
The OUI prefix 001D21 is assigned to Alcad SL, based in Pol. Ind. Arreche-Ugalde, 1 Irún Guipúzcoa ES E-20305 . It is a MA-L type block of 24 bits (first three octets). Allows up to 16 million unique MAC addresses. If you find this prefix on your network, the devices belong to Alcad SL.