Which company owns MAC address prefix 20:05:05?

MAC address prefix 20:05:05 is registered to RADMAX COMMUNICATION PRIVATE LIMITED in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 20:05:05 has a network interface built by RADMAX COMMUNICATION PRIVATE LIMITED.

What is the OUI 20:05:05?

20:05:05 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to RADMAX COMMUNICATION PRIVATE LIMITED. It covers every address from 20:05:05:00:00:00 to 20:05:05:FF:FF:FF, or 16,777,216 addresses in total. It is also written 20-05-05.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 20:05:05:00:00:00 that is 20:05:05 — 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 RADMAX COMMUNICATION PRIVATE LIMITED located?

RADMAX COMMUNICATION PRIVATE LIMITED is listed at F-24/34, IIND FLOOR, SECTOR-7 DELHI DELHI IN 110085 in the IEEE OUI registry entry for 20:05:05. This is the address the organization registered with the IEEE, which may differ from its current operating address.

RADMAX COMMUNICATION PRIVATE LIMITED

MAC address prefix 20:05:05 is registered to RADMAX COMMUNICATION PRIVATE LIMITED in the IEEE OUI registry. Any device whose MAC address begins with 20:05:05 has a network interface built by RADMAX COMMUNICATION PRIVATE 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 20:05:05:00:00:00 to 20:05:05:FF:FF:FF.

OUI prefix: 20:05:05
Hyphen form: 20-05-05
MAC range: 20:05:05:00:00:00 – 20:05:05:FF:FF:FF
Addresses in block: 16,777,216
Organization: RADMAX COMMUNICATION PRIVATE LIMITED
Address: F-24/34, IIND FLOOR, SECTOR-7 DELHI DELHI IN 110085
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 "RADMAX COMMUNICATION PRIVATE LIMITED"
archived source →
2026-07-17Assigned to "RADMAX COMMUNICATION PRIVATE LIMITED"

Nearby in the registry

The prefixes assigned immediately before and after 20:05:05:

FAQ

Which company owns MAC address prefix 20:05:05?: MAC address prefix 20:05:05 is registered to RADMAX COMMUNICATION PRIVATE LIMITED in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 20:05:05 has a network interface built by RADMAX COMMUNICATION PRIVATE LIMITED.
What is the OUI 20:05:05?: 20:05:05 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to RADMAX COMMUNICATION PRIVATE LIMITED. It covers every address from 20:05:05:00:00:00 to 20:05:05:FF:FF:FF, or 16,777,216 addresses in total. It is also written 20-05-05.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 20:05:05:00:00:00 that is 20:05:05 — 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 RADMAX COMMUNICATION PRIVATE LIMITED located?: RADMAX COMMUNICATION PRIVATE LIMITED is listed at F-24/34, IIND FLOOR, SECTOR-7 DELHI DELHI IN 110085 in the IEEE OUI registry entry for 20:05:05. This is the address the organization registered with the IEEE, which may differ from its current operating address.