Alstom Strongwish (Shenzhen) Co., Ltd. (30:EF:D1:00:00:00 /24)

Alstom Strongwish (Shenzhen) Co., Ltd. MA-L

MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.

Prefix30:EF:D1:00:00:00 /24

Vendor address5F,Building No.6, Keji Middle 2 Road High-Tech Industrial Park, Shen Zhen Guangdong CN 518057

Block range30:EF:D1:00:00:00– 30:EF:D1:FF:FF:FF

Address capacity16,777,216

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

30:EF:D1:00:00:00 30:EF:D1:7F:FF:FF 30:EF:D1:FF:FF:FF