ResearchIEEE MA-L, MA-M & MA-S · refreshed daily

F4:B3:81 WindowMaster A/S

Every MAC address from F4:B3:81:00:00:00 to F4:B3:81:FF:FF:FF belongs to a block the IEEE assigned to WindowMaster A/S. Network cards, phones and other devices it makes carry addresses from here.

Assignment

Who F4:B3:81 belongs to

Written F4:B3:81, F4-B3-81 or F4B381, depending on the system. Look up a full address.

Prefix

F4:B3:81

Organization

WindowMaster A/S

Registry

MA-L (a 24-bit OUI)

Addresses

16,777,216

First address

F4:B3:81:00:00:00

Last address

F4:B3:81:FF:FF:FF

Address type

Globally unique, unicast

Registered address

Skelstedet 13 Vedbaek DK 2950