Which company owns MAC address prefix F0:9A:51?

MAC address prefix F0:9A:51 is registered to Shanghai Viroyal Electronic Technology Company Limited in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with F0:9A:51 has a network interface built by Shanghai Viroyal Electronic Technology Company Limited.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in F0:9A:51:00:00:00 that is F0:9A:51 — 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.

Shanghai Viroyal Electronic Technology Company Limited

MAC address prefix F0:9A:51 is registered to Shanghai Viroyal Electronic Technology Company Limited in the IEEE OUI registry. Any device whose MAC address begins with F0:9A:51 has a network interface built by Shanghai Viroyal Electronic Technology Company Limited. 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 F0:9A:51:00:00:00 to F0:9A:51:FF:FF:FF.

OUI prefix: F0:9A:51
Hyphen form: F0-9A-51
MAC range: F0:9A:51:00:00:00 – F0:9A:51:FF:FF:FF
Addresses in block: 16,777,216
Organization: Shanghai Viroyal Electronic Technology Company Limited
Address: LevelB,Building#3,401 Caobao Road,Shanghai,China Shanghai Shanghai CN 200233
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.

2016-07-29Assigned to "Shanghai Viroyal Electronic Technology Company Limited"
archived source →
2026-07-17Assigned to "Shanghai Viroyal Electronic Technology Company Limited"

Nearby in the registry

The prefixes assigned immediately before and after F0:9A:51:

FAQ

Which company owns MAC address prefix F0:9A:51?: MAC address prefix F0:9A:51 is registered to Shanghai Viroyal Electronic Technology Company Limited in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with F0:9A:51 has a network interface built by Shanghai Viroyal Electronic Technology Company Limited.
What is the OUI F0:9A:51?: F0:9A:51 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Shanghai Viroyal Electronic Technology Company Limited. It covers every address from F0:9A:51:00:00:00 to F0:9A:51:FF:FF:FF, or 16,777,216 addresses in total. It is also written F0-9A-51.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in F0:9A:51:00:00:00 that is F0:9A:51 — 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 Shanghai Viroyal Electronic Technology Company Limited located?: Shanghai Viroyal Electronic Technology Company Limited is listed at LevelB,Building#3,401 Caobao Road,Shanghai,China Shanghai Shanghai CN 200233 in the IEEE OUI registry entry for F0:9A:51. This is the address the organization registered with the IEEE, which may differ from its current operating address.