MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix70:B3:D5:1B:D0:00 /36
Vendor addressRoom 2039, Shenhai Building, Wanzhong Village, Bulong Road, Minzhi, Longhua district, City: Shenzhen Shenzhen Guangdong CN 518131
Country🇨🇳 China
RegisteredOct 4, 2018
Block range70:B3:D5:1B:D0:00– 70:B3:D5:1B:DF:FF
Address capacity4,096
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
70:B3:D5:1B:C0:00 /36
Flextronics International Kft
Next
70:B3:D5:1B:E0:00 /36
Potter Electric Signal Co. LLC
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Shenzhen Siera Technology Ltd holds 2 registered blocks in the IEEE registry, ranking #3,031 of 33,421 organizations by block count.
Other blocks registered to Shenzhen Siera Technology Ltd