Which company owns MAC address prefix 70:76:DD?

MAC address prefix 70:76:DD is registered to OxyGuard Internation A/S in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 70:76:DD has a network interface built by OxyGuard Internation A/S.

What is the OUI 70:76:DD?

70:76:DD is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to OxyGuard Internation A/S. It covers every address from 70:76:DD:00:00:00 to 70:76:DD:FF:FF:FF, or 16,777,216 addresses in total. It is also written 70-76-DD.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 70:76:DD:00:00:00 that is 70:76:DD — 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 OxyGuard Internation A/S located?

OxyGuard Internation A/S is listed at Farum Gydevej 64 Farum DK DK-3520 in the IEEE OUI registry entry for 70:76:DD. This is the address the organization registered with the IEEE, which may differ from its current operating address.

OxyGuard Internation A/S

MAC address prefix 70:76:DD is registered to OxyGuard Internation A/S in the IEEE OUI registry. Any device whose MAC address begins with 70:76:DD has a network interface built by OxyGuard Internation A/S. 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 70:76:DD:00:00:00 to 70:76:DD:FF:FF:FF.

OUI prefix: 70:76:DD
Hyphen form: 70-76-DD
MAC range: 70:76:DD:00:00:00 – 70:76:DD:FF:FF:FF
Addresses in block: 16,777,216
Organization: OxyGuard Internation A/S
Address: Farum Gydevej 64 Farum DK DK-3520
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 "Oxyguard International A/S"
archived source →
2020-03-21Renamed from "Oxyguard International A/S" to "OxyGuard Internation A/S"
archived source →
2026-07-17Assigned to "OxyGuard Internation A/S"

Nearby in the registry

The prefixes assigned immediately before and after 70:76:DD:

FAQ

Which company owns MAC address prefix 70:76:DD?: MAC address prefix 70:76:DD is registered to OxyGuard Internation A/S in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 70:76:DD has a network interface built by OxyGuard Internation A/S.
What is the OUI 70:76:DD?: 70:76:DD is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to OxyGuard Internation A/S. It covers every address from 70:76:DD:00:00:00 to 70:76:DD:FF:FF:FF, or 16,777,216 addresses in total. It is also written 70-76-DD.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 70:76:DD:00:00:00 that is 70:76:DD — 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 OxyGuard Internation A/S located?: OxyGuard Internation A/S is listed at Farum Gydevej 64 Farum DK DK-3520 in the IEEE OUI registry entry for 70:76:DD. This is the address the organization registered with the IEEE, which may differ from its current operating address.