MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix8C:1F:64:9F:50:00 /36
Vendor address1-4-30 MEISHINGUCHI,TOYONAKA OSAKA JP 561-0841
Country🇯🇵 Japan
RegisteredMar 9, 2023
Block range8C:1F:64:9F:50:00– 8C:1F:64:9F:5F: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
8C:1F:64:9F:40:00 /36
Grossenbacher Systeme AG
Next
8C:1F:64:9F:60:00 /36
Vision Systems Safety Tech
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
YUYAMA MFG Co.,Ltd holds 50 registered blocks in the IEEE registry, ranking #73 of 33,427 organizations by block count.
Other blocks registered to YUYAMA MFG Co.,Ltd
00:50:C2:39:B0:00 /36
IAB
00:50:C2:A2:E0:00 /36
IAB
00:50:C2:EE:C0:00 /36
IAB
40:D8:55:0F:F0:00 /36
IAB
70:B3:D5:15:00:00 /36
MA-S
70:B3:D5:19:60:00 /36
MA-S
70:B3:D5:1F:20:00 /36
MA-S
70:B3:D5:2D:E0:00 /36
MA-S
70:B3:D5:5C:80:00 /36
MA-S
70:B3:D5:74:20:00 /36
MA-S
70:B3:D5:85:F0:00 /36
MA-S
70:B3:D5:9C:70:00 /36
MA-S