Which company owns MAC address prefix 78:48:FC?

MAC address prefix 78:48:FC is registered to System Loco Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 78:48:FC has a network interface built by System Loco Ltd.

What is the OUI 78:48:FC?

78:48:FC is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to System Loco Ltd. It covers every address from 78:48:FC:00:00:00 to 78:48:FC:FF:FF:FF, or 16,777,216 addresses in total. It is also written 78-48-FC.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 78:48:FC:00:00:00 that is 78:48:FC — 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 System Loco Ltd located?

System Loco Ltd is listed at 3-2-6 Storey House Lancaster GB LA1 4XQ in the IEEE OUI registry entry for 78:48:FC. This is the address the organization registered with the IEEE, which may differ from its current operating address.

System Loco Ltd

MAC address prefix 78:48:FC is registered to System Loco Ltd in the IEEE OUI registry. Any device whose MAC address begins with 78:48:FC has a network interface built by System Loco 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 78:48:FC:00:00:00 to 78:48:FC:FF:FF:FF.

OUI prefix: 78:48:FC
Hyphen form: 78-48-FC
MAC range: 78:48:FC:00:00:00 – 78:48:FC:FF:FF:FF
Addresses in block: 16,777,216
Organization: System Loco Ltd
Address: 3-2-6 Storey House Lancaster GB LA1 4XQ
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 (1)

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

2026-07-17Assigned to "System Loco Ltd"

Nearby in the registry

The prefixes assigned immediately before and after 78:48:FC:

FAQ

Which company owns MAC address prefix 78:48:FC?: MAC address prefix 78:48:FC is registered to System Loco Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 78:48:FC has a network interface built by System Loco Ltd.
What is the OUI 78:48:FC?: 78:48:FC is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to System Loco Ltd. It covers every address from 78:48:FC:00:00:00 to 78:48:FC:FF:FF:FF, or 16,777,216 addresses in total. It is also written 78-48-FC.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 78:48:FC:00:00:00 that is 78:48:FC — 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 System Loco Ltd located?: System Loco Ltd is listed at 3-2-6 Storey House Lancaster GB LA1 4XQ in the IEEE OUI registry entry for 78:48:FC. This is the address the organization registered with the IEEE, which may differ from its current operating address.