Guangzhou Sunrise Technology 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:B1:4E:C0:00:00 /28

Vendor address503, C2,No.182 Science Avenue,Science City,High-Tech Industrial Development Zone Guangzhou, Guangdong , CN. Guangzhou Guangdong CN 510000

Country🇨🇳 China

RegisteredMar 9, 2026

Block range38:B1:4E:C0:00:00– 38:B1:4E:CF: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:B1:4E:C0:00:00 38:B1:4E:C7:FF:FF 38:B1:4E:CF:FF:FF

Where this block sits

Previous 38:B1:4E:B0:00:00 /28 Huizhou GYXX Technology Co., Ltd Next 38:B1:4E:E0:00:00 /28 Zoho Business Services LLP - ZBS Nagpur,

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

Guangzhou Sunrise Technology Co., Ltd. holds 1 registered blocks in the IEEE registry, ranking #14,199 of 33,427 organizations by block count.