Which company owns MAC address prefix 84:45:A0?

MAC address prefix 84:45:A0 is registered to Tube investments of India Limited in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 84:45:A0 has a network interface built by Tube investments of India Limited.

What is the OUI 84:45:A0?

84:45:A0 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Tube investments of India Limited. It covers every address from 84:45:A0:00:00:00 to 84:45:A0:FF:FF:FF, or 16,777,216 addresses in total. It is also written 84-45-A0.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 84:45:A0:00:00:00 that is 84:45:A0 — 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 Tube investments of India Limited located?

Tube investments of India Limited is listed at Chola crest, 4th floor, No. C 54-55 & Super B4, Thiru Vi Ka Industrial Area, Guindy, Chennai - 600032 Chennai Other IN 600032 in the IEEE OUI registry entry for 84:45:A0. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Tube investments of India Limited

MAC address prefix 84:45:A0 is registered to Tube investments of India Limited in the IEEE OUI registry. Any device whose MAC address begins with 84:45:A0 has a network interface built by Tube investments of India Limited. 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 84:45:A0:00:00:00 to 84:45:A0:FF:FF:FF.

OUI prefix: 84:45:A0
Hyphen form: 84-45-A0
MAC range: 84:45:A0:00:00:00 – 84:45:A0:FF:FF:FF
Addresses in block: 16,777,216
Organization: Tube investments of India Limited
Address: Chola crest, 4th floor, No. C 54-55 & Super B4, Thiru Vi Ka Industrial Area, Guindy, Chennai - 600032 Chennai Other IN 600032
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.

2026-01-08Assigned to "Tube investments of India Limited"
archived source →
2026-07-17Assigned to "Tube investments of India Limited"

Nearby in the registry

The prefixes assigned immediately before and after 84:45:A0:

FAQ

Which company owns MAC address prefix 84:45:A0?: MAC address prefix 84:45:A0 is registered to Tube investments of India Limited in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 84:45:A0 has a network interface built by Tube investments of India Limited.
What is the OUI 84:45:A0?: 84:45:A0 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Tube investments of India Limited. It covers every address from 84:45:A0:00:00:00 to 84:45:A0:FF:FF:FF, or 16,777,216 addresses in total. It is also written 84-45-A0.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 84:45:A0:00:00:00 that is 84:45:A0 — 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 Tube investments of India Limited located?: Tube investments of India Limited is listed at Chola crest, 4th floor, No. C 54-55 & Super B4, Thiru Vi Ka Industrial Area, Guindy, Chennai - 600032 Chennai Other IN 600032 in the IEEE OUI registry entry for 84:45:A0. This is the address the organization registered with the IEEE, which may differ from its current operating address.