macadress

Optiver Services B.V.

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.
Prefix5C:6A:EC:80:00:00 /28
Vendor addressStrawinskylaan 3095 Amsterdam NL 1077 ZX
Country🇳🇱  Netherlands
RegisteredDec 16, 2022
Block range5C:6A:EC:80:00:00– 5C:6A:EC:8F: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

5C:6A:EC:80:00:00 5C:6A:EC:87:FF:FF 5C:6A:EC:8F:FF:FF

Where this block sits

Previous 5C:6A:EC:70:00:00 /28 Nippon Pulse Motor Co., Ltd. Next 5C:6A:EC:90:00:00 /28 Shanghai Alway Information Technology Co., Ltd

The nearest registered blocks of the same size on either side of this one in IEEE's address space.

Optiver Services B.V. holds 1 registered blocks in the IEEE registry, ranking #22,203 of 33,427 organizations by block count.