Tianjin Sublue Ocean Science & Technology Co., Ltd (34:E1:D1:00:00:00 /28)

Tianjin Sublue Ocean Science & Technology 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.

Prefix34:E1:D1:00:00:00 /28

Vendor addressNo.29 Factory No.156 Nanhai Road,TEDA Tianjin CN 300050

Block range34:E1:D1:00:00:00– 34:E1:D1:0F: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

34:E1:D1:00:00:00 34:E1:D1:07:FF:FF 34:E1:D1:0F:FF:FF