Which company owns MAC address prefix 68:D9:25?

MAC address prefix 68:D9:25 is registered to ProSys Development Services in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 68:D9:25 has a network interface built by ProSys Development Services.

What is the OUI 68:D9:25?

68:D9:25 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ProSys Development Services. It covers every address from 68:D9:25:00:00:00 to 68:D9:25:FF:FF:FF, or 16,777,216 addresses in total. It is also written 68-D9-25.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 68:D9:25:00:00:00 that is 68:D9:25 — 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 ProSys Development Services located?

ProSys Development Services is listed at Mill House Mitcham Surrey GB CR4 4HY in the IEEE OUI registry entry for 68:D9:25. This is the address the organization registered with the IEEE, which may differ from its current operating address.

ProSys Development Services

MAC address prefix 68:D9:25 is registered to ProSys Development Services in the IEEE OUI registry. Any device whose MAC address begins with 68:D9:25 has a network interface built by ProSys Development Services. 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 68:D9:25:00:00:00 to 68:D9:25:FF:FF:FF.

OUI prefix: 68:D9:25
Hyphen form: 68-D9-25
MAC range: 68:D9:25:00:00:00 – 68:D9:25:FF:FF:FF
Addresses in block: 16,777,216
Organization: ProSys Development Services
Address: Mill House Mitcham Surrey GB CR4 4HY
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 "ProSys Development Services"
archived source →
2026-07-17Assigned to "ProSys Development Services"

Nearby in the registry

The prefixes assigned immediately before and after 68:D9:25:

FAQ

Which company owns MAC address prefix 68:D9:25?: MAC address prefix 68:D9:25 is registered to ProSys Development Services in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 68:D9:25 has a network interface built by ProSys Development Services.
What is the OUI 68:D9:25?: 68:D9:25 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ProSys Development Services. It covers every address from 68:D9:25:00:00:00 to 68:D9:25:FF:FF:FF, or 16,777,216 addresses in total. It is also written 68-D9-25.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 68:D9:25:00:00:00 that is 68:D9:25 — 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 ProSys Development Services located?: ProSys Development Services is listed at Mill House Mitcham Surrey GB CR4 4HY in the IEEE OUI registry entry for 68:D9:25. This is the address the organization registered with the IEEE, which may differ from its current operating address.