MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixBC:31:98:50:00:00 /28
Vendor addressRoom603, Building E4, Yunlong HeadQuarters Economic Park, No.5099 Yunlong Avenue, Yunlong Demonstration Zone, Zhuzhou City Zhuzhou CN 430200
Country🇨🇳 China
RegisteredApr 5, 2023
Block rangeBC:31:98:50:00:00– BC:31:98:5F: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
Where this block sits
Previous
BC:31:98:40:00:00 /28
Chongqing e-skybest ELECT CO.,LIMITED
Next
BC:31:98:60:00:00 /28
ntc mekhanotronnika
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Hunan Gukam Railway Equipment Co.,Ltd holds 1 registered blocks in the IEEE registry, ranking #15,280 of 33,427 organizations by block count.