Hong Telecom Equipment Service Limited

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.

Prefix54:91:AF:70:00:00 /28

Vendor addressA201, 2nd Floor, East Tower, Nanshan Digital Cultural Industry Base, No. 10128 Shennan Avenue, Nanshan District, Shenzhen Guangdong CN China

Country🇨🇳 China

RegisteredJun 1, 2023

Block range54:91:AF:70:00:00– 54:91:AF:7F: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

54:91:AF:70:00:00 54:91:AF:77:FF:FF 54:91:AF:7F:FF:FF

Where this block sits

Previous 54:91:AF:60:00:00 /28 Star Systems International Limited Next 54:91:AF:80:00:00 /28 Hunan Quanying Electronics Co. , Ltd.

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

Hong Telecom Equipment Service Limited holds 1 registered blocks in the IEEE registry, ranking #15,086 of 33,427 organizations by block count.