GY-FX SAS (04:A1:6F:60:00:00 /28)

GY-FX SAS MA-M

MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.

Prefix04:A1:6F:60:00:00 /28

Vendor address38 rue du Botrel 35690 Brittany FR Acigne

Block range04:A1:6F:60:00:00– 04:A1:6F:6F:FF:FF

Address capacity1,048,576

AdministrationUniversally administered: its prefix comes from a block registered through the IEEE Registration Authority

TransmissionUnicast: addressed to a single device

SourceIEEE Registration Authority

Address capacity is the size of this registered block, not a count of devices actually manufactured or online. Registration identifies the organization holding the block, not a specific device model or unit.

Curious how a prefix like this turns into a full address? See how MAC addresses are structured →

Example addresses in this block

04:A1:6F:60:00:00 04:A1:6F:67:FF:FF 04:A1:6F:6F:FF:FF

Other blocks registered to GY-FX SAS

70:B3:D5:4B:E0:00 /36 MA-S 8C:1F:64:E7:70:00 /36 MA-S