MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix54:91:AF:60:00:00 /28
Vendor addressUnit 04, 12/F Vanta Industrial Centre, 21-33 Tai Lin Pai Road Kwai Chung HK 852
CountryðŸ‡ðŸ‡° Hong Kong
RegisteredJun 2, 2023
Block range54:91:AF:60:00:00– 54:91:AF: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
Where this block sits
Previous
54:91:AF:50:00:00 /28
Shenzhen IDSTE Information Technology Co., LTD
Next
54:91:AF:70:00:00 /28
Hong Telecom Equipment Service Limited
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Star Systems International Limited holds 3 registered blocks in the IEEE registry, ranking #1,327 of 33,427 organizations by block count.
Other blocks registered to Star Systems International Limited