Bejing Nexsec Inc.

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.

PrefixCC:D3:9D:90:00:00 /28

Vendor addressFloor 5, Room 5001,Buliding No.4,Fengxian Middle Road No.7 (Beike Industrial Park),Haidian District, Beijing CN 100094

Country🇨🇳 China

RegisteredOct 12, 2018

Block rangeCC:D3:9D:90:00:00– CC:D3:9D:9F: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

CC:D3:9D:90:00:00 CC:D3:9D:97:FF:FF CC:D3:9D:9F:FF:FF

Where this block sits

Previous CC:D3:9D:80:00:00 /28 Obelisk Inc. Next CC:D3:9D:A0:00:00 /28 Lubelskie Fabryki Wag FAWAG S.A.

The nearest registered blocks of the same size on either side of this one in IEEE's address space.

Bejing Nexsec Inc. holds 1 registered blocks in the IEEE registry, ranking #6,810 of 33,421 organizations by block count.