Which company owns MAC address prefix D4:4C:A7?

MAC address prefix D4:4C:A7 is registered to Informtekhnika & Communication, LLC in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D4:4C:A7 has a network interface built by Informtekhnika & Communication, LLC.

What is the OUI D4:4C:A7?

D4:4C:A7 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Informtekhnika & Communication, LLC. It covers every address from D4:4C:A7:00:00:00 to D4:4C:A7:FF:FF:FF, or 16,777,216 addresses in total. It is also written D4-4C-A7.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in D4:4C:A7:00:00:00 that is D4:4C:A7 — 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 Informtekhnika & Communication, LLC located?

Informtekhnika & Communication, LLC is listed at 1, build. 2/1, Verhnaya Moscow RU 107140 in the IEEE OUI registry entry for D4:4C:A7. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Informtekhnika & Communication, LLC

MAC address prefix D4:4C:A7 is registered to Informtekhnika & Communication, LLC in the IEEE OUI registry. Any device whose MAC address begins with D4:4C:A7 has a network interface built by Informtekhnika & Communication, LLC. 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 D4:4C:A7:00:00:00 to D4:4C:A7:FF:FF:FF.

OUI prefix: D4:4C:A7
Hyphen form: D4-4C-A7
MAC range: D4:4C:A7:00:00:00 – D4:4C:A7:FF:FF:FF
Addresses in block: 16,777,216
Organization: Informtekhnika & Communication, LLC
Address: 1, build. 2/1, Verhnaya Moscow RU 107140
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 "Informtekhnika & Communication, LLC"
archived source →
2026-07-17Assigned to "Informtekhnika & Communication, LLC"

Nearby in the registry

The prefixes assigned immediately before and after D4:4C:A7:

FAQ

Which company owns MAC address prefix D4:4C:A7?: MAC address prefix D4:4C:A7 is registered to Informtekhnika & Communication, LLC in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D4:4C:A7 has a network interface built by Informtekhnika & Communication, LLC.
What is the OUI D4:4C:A7?: D4:4C:A7 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Informtekhnika & Communication, LLC. It covers every address from D4:4C:A7:00:00:00 to D4:4C:A7:FF:FF:FF, or 16,777,216 addresses in total. It is also written D4-4C-A7.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in D4:4C:A7:00:00:00 that is D4:4C:A7 — 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 Informtekhnika & Communication, LLC located?: Informtekhnika & Communication, LLC is listed at 1, build. 2/1, Verhnaya Moscow RU 107140 in the IEEE OUI registry entry for D4:4C:A7. This is the address the organization registered with the IEEE, which may differ from its current operating address.