Beseye Cloud Security Co. Ltd.

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.

Prefix58:FC:DB:20:00:00 /28

Vendor address3F.-1, No.45-1, Dexing W. Rd., Shilin Dist. Taipei City Taiwan TW 11158

RegisteredOct 16, 2015

Block range58:FC:DB:20:00:00– 58:FC:DB:2F: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

58:FC:DB:20:00:00 58:FC:DB:27:FF:FF 58:FC:DB:2F:FF:FF

Where this block sits

Previous 58:FC:DB:10:00:00 /28 Certis Technology International Next 58:FC:DB:30:00:00 /28 Custom Biogenic Systems

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

Beseye Cloud Security Co. Ltd. holds 1 registered blocks in the IEEE registry, ranking #6,893 of 33,427 organizations by block count.