Which company owns MAC address prefix 04:8B:42?

MAC address prefix 04:8B:42 is registered to Skspruce Technologies in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 04:8B:42 has a network interface built by Skspruce Technologies.

What is the OUI 04:8B:42?

04:8B:42 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Skspruce Technologies. It covers every address from 04:8B:42:00:00:00 to 04:8B:42:FF:FF:FF, or 16,777,216 addresses in total. It is also written 04-8B-42.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 04:8B:42:00:00:00 that is 04:8B:42 — 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 Skspruce Technologies located?

Skspruce Technologies is listed at A1, Tianfu Software Park, 1129 Century City Road High-tech Zone, Chengdu Sichuan CN 610041 in the IEEE OUI registry entry for 04:8B:42. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Skspruce Technologies

MAC address prefix 04:8B:42 is registered to Skspruce Technologies in the IEEE OUI registry. Any device whose MAC address begins with 04:8B:42 has a network interface built by Skspruce Technologies. 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 04:8B:42:00:00:00 to 04:8B:42:FF:FF:FF.

OUI prefix: 04:8B:42
Hyphen form: 04-8B-42
MAC range: 04:8B:42:00:00:00 – 04:8B:42:FF:FF:FF
Addresses in block: 16,777,216
Organization: Skspruce Technologies
Address: A1, Tianfu Software Park, 1129 Century City Road High-tech Zone, Chengdu Sichuan CN 610041
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 (3)

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 "Skspruce Technology Limited"
archived source →
2017-09-08Renamed from "Skspruce Technology Limited" to "Skspruce Technologies"
archived source →
2026-07-17Assigned to "Skspruce Technologies"

Nearby in the registry

The prefixes assigned immediately before and after 04:8B:42:

FAQ

Which company owns MAC address prefix 04:8B:42?: MAC address prefix 04:8B:42 is registered to Skspruce Technologies in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 04:8B:42 has a network interface built by Skspruce Technologies.
What is the OUI 04:8B:42?: 04:8B:42 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Skspruce Technologies. It covers every address from 04:8B:42:00:00:00 to 04:8B:42:FF:FF:FF, or 16,777,216 addresses in total. It is also written 04-8B-42.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 04:8B:42:00:00:00 that is 04:8B:42 — 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 Skspruce Technologies located?: Skspruce Technologies is listed at A1, Tianfu Software Park, 1129 Century City Road High-tech Zone, Chengdu Sichuan CN 610041 in the IEEE OUI registry entry for 04:8B:42. This is the address the organization registered with the IEEE, which may differ from its current operating address.