Which company owns MAC address prefix D8:FC:38?

MAC address prefix D8:FC:38 is registered to Giantec Semiconductor Inc in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D8:FC:38 has a network interface built by Giantec Semiconductor Inc.

What is the OUI D8:FC:38?

D8:FC:38 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Giantec Semiconductor Inc. It covers every address from D8:FC:38:00:00:00 to D8:FC:38:FF:FF:FF, or 16,777,216 addresses in total. It is also written D8-FC-38.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in D8:FC:38:00:00:00 that is D8:FC:38 — 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 Giantec Semiconductor Inc located?

Giantec Semiconductor Inc is listed at No12, Lane647, Songtao Rd, Zhangjiang Hi-Tech Park Shanghai Shanghai CN 201203 in the IEEE OUI registry entry for D8:FC:38. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Giantec Semiconductor Inc

MAC address prefix D8:FC:38 is registered to Giantec Semiconductor Inc in the IEEE OUI registry. Any device whose MAC address begins with D8:FC:38 has a network interface built by Giantec Semiconductor Inc. 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 D8:FC:38:00:00:00 to D8:FC:38:FF:FF:FF.

OUI prefix: D8:FC:38
Hyphen form: D8-FC-38
MAC range: D8:FC:38:00:00:00 – D8:FC:38:FF:FF:FF
Addresses in block: 16,777,216
Organization: Giantec Semiconductor Inc
Address: No12, Lane647, Songtao Rd, Zhangjiang Hi-Tech Park Shanghai Shanghai CN 201203
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 "Giantec Semiconductor Inc"
archived source →
2026-07-17Assigned to "Giantec Semiconductor Inc"

Nearby in the registry

The prefixes assigned immediately before and after D8:FC:38:

FAQ

Which company owns MAC address prefix D8:FC:38?: MAC address prefix D8:FC:38 is registered to Giantec Semiconductor Inc in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D8:FC:38 has a network interface built by Giantec Semiconductor Inc.
What is the OUI D8:FC:38?: D8:FC:38 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Giantec Semiconductor Inc. It covers every address from D8:FC:38:00:00:00 to D8:FC:38:FF:FF:FF, or 16,777,216 addresses in total. It is also written D8-FC-38.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in D8:FC:38:00:00:00 that is D8:FC:38 — 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 Giantec Semiconductor Inc located?: Giantec Semiconductor Inc is listed at No12, Lane647, Songtao Rd, Zhangjiang Hi-Tech Park Shanghai Shanghai CN 201203 in the IEEE OUI registry entry for D8:FC:38. This is the address the organization registered with the IEEE, which may differ from its current operating address.