Shenzhen HS Fiber Communication Equipment CO., LTD (38:3A:21:20:00:00 /28)

Shenzhen HS Fiber Communication Equipment CO., LTD 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.

Prefix38:3A:21:20:00:00 /28

Vendor address6F, Bld#A, Dezhong Industrial Park, Yangmei Village, Bantian Town, Longgang District Shenzhen Guangdong CN 518129

Country🇨🇳 China

Block range38:3A:21:20:00:00– 38:3A:21:2F: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

38:3A:21:20:00:00 38:3A:21:27:FF:FF 38:3A:21:2F:FF:FF

Other blocks registered to Shenzhen HS Fiber Communication Equipment CO., LTD

98:C7:A4:00:00:00 /24 MA-L