MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix70:B3:D5:7F:00:00 /36
Vendor addressMinami Shinjuku Hoshino Bldg. 5-23-13 Sendagaya Shibuya-ku Tokyo JP 151-0051
Country🇯🇵 Japan
RegisteredJun 27, 2020
Block range70:B3:D5:7F:00:00– 70:B3:D5:7F:0F: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 →
Ownership timeline
- Jun 27, 2020 – Oct 8, 2020 Yokogawa Denshikiki Co.,Ltd name changed
- Oct 8, 2020 – present YDK Technologies Co.,Ltd
Example addresses in this block
Where this block sits
Previous
70:B3:D5:7E:F0:00 /36
CRAVIS CO., LIMITED
Next
70:B3:D5:7F:10:00 /36
AeroVision Avionics, Inc.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
YDK Technologies Co.,Ltd holds 1 registered blocks in the IEEE registry, ranking #32,905 of 33,421 organizations by block count.