Which company owns MAC address prefix F4:1C:71?

MAC address prefix F4:1C:71 is registered to SHENZHEN SANMU COMMUNICATION TECHNOLOGY CO., LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with F4:1C:71 has a network interface built by SHENZHEN SANMU COMMUNICATION TECHNOLOGY CO., LTD.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in F4:1C:71:00:00:00 that is F4:1C:71 — and look that prefix up in the IEEE OUI registry. If the second-lowest bit of the first octet is set, the address is locally administered (a randomized or private MAC), which belongs to no manufacturer and will not resolve; modern phones and laptops use these by default on each network.

SHENZHEN SANMU COMMUNICATION TECHNOLOGY CO., LTD

MAC address prefix F4:1C:71 is registered to SHENZHEN SANMU COMMUNICATION TECHNOLOGY CO., LTD in the IEEE OUI registry. Any device whose MAC address begins with F4:1C:71 has a network interface built by SHENZHEN SANMU COMMUNICATION TECHNOLOGY CO., LTD. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address — it covers every MAC from F4:1C:71:00:00:00 to F4:1C:71:FF:FF:FF.

OUI prefix: F4:1C:71
Hyphen form: F4-1C-71
MAC range: F4:1C:71:00:00:00 – F4:1C:71:FF:FF:FF
Addresses in block: 16,777,216
Organization: SHENZHEN SANMU COMMUNICATION TECHNOLOGY CO., LTD
Address: 17/F,Block 1A,Software Industry Base, XueFu Road,Nanshan District, Shenzhen GuangDong CN 518100
Source: IEEE OUI registry

Have a full MAC address? Look it up— we'll also tell you if it's a randomized (private) address rather than a real manufacturer prefix.

Assignment history (2)

The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.

2022-07-11Assigned to "SHENZHEN SANMU COMMUNICATION TECHNOLOGY CO., LTD"
archived source →
2026-07-17Assigned to "SHENZHEN SANMU COMMUNICATION TECHNOLOGY CO., LTD"

Nearby in the registry

The prefixes assigned immediately before and after F4:1C:71:

FAQ

Which company owns MAC address prefix F4:1C:71?: MAC address prefix F4:1C:71 is registered to SHENZHEN SANMU COMMUNICATION TECHNOLOGY CO., LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with F4:1C:71 has a network interface built by SHENZHEN SANMU COMMUNICATION TECHNOLOGY CO., LTD.
What is the OUI F4:1C:71?: F4:1C:71 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SHENZHEN SANMU COMMUNICATION TECHNOLOGY CO., LTD. It covers every address from F4:1C:71:00:00:00 to F4:1C:71:FF:FF:FF, or 16,777,216 addresses in total. It is also written F4-1C-71.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in F4:1C:71:00:00:00 that is F4:1C:71 — and look that prefix up in the IEEE OUI registry. If the second-lowest bit of the first octet is set, the address is locally administered (a randomized or private MAC), which belongs to no manufacturer and will not resolve; modern phones and laptops use these by default on each network.
Where is SHENZHEN SANMU COMMUNICATION TECHNOLOGY CO., LTD located?: SHENZHEN SANMU COMMUNICATION TECHNOLOGY CO., LTD is listed at 17/F,Block 1A,Software Industry Base, XueFu Road,Nanshan District, Shenzhen GuangDong CN 518100 in the IEEE OUI registry entry for F4:1C:71. This is the address the organization registered with the IEEE, which may differ from its current operating address.