Which company owns MAC address prefix 30:A2:20?

MAC address prefix 30:A2:20 is registered to ARG Telecom in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 30:A2:20 has a network interface built by ARG Telecom.

What is the OUI 30:A2:20?

30:A2:20 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ARG Telecom. It covers every address from 30:A2:20:00:00:00 to 30:A2:20:FF:FF:FF, or 16,777,216 addresses in total. It is also written 30-A2-20.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 30:A2:20:00:00:00 that is 30:A2:20 — 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 ARG Telecom located?

ARG Telecom is listed at No.69, W. Lavasani St. , Tehran Tehran IR 1936938194 in the IEEE OUI registry entry for 30:A2:20. This is the address the organization registered with the IEEE, which may differ from its current operating address.

ARG Telecom

MAC address prefix 30:A2:20 is registered to ARG Telecom in the IEEE OUI registry. Any device whose MAC address begins with 30:A2:20 has a network interface built by ARG Telecom. 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 30:A2:20:00:00:00 to 30:A2:20:FF:FF:FF.

OUI prefix: 30:A2:20
Hyphen form: 30-A2-20
MAC range: 30:A2:20:00:00:00 – 30:A2:20:FF:FF:FF
Addresses in block: 16,777,216
Organization: ARG Telecom
Address: No.69, W. Lavasani St. , Tehran Tehran IR 1936938194
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 "ARG Telecom"
archived source →
2026-07-17Assigned to "ARG Telecom"

Nearby in the registry

The prefixes assigned immediately before and after 30:A2:20:

FAQ

Which company owns MAC address prefix 30:A2:20?: MAC address prefix 30:A2:20 is registered to ARG Telecom in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 30:A2:20 has a network interface built by ARG Telecom.
What is the OUI 30:A2:20?: 30:A2:20 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ARG Telecom. It covers every address from 30:A2:20:00:00:00 to 30:A2:20:FF:FF:FF, or 16,777,216 addresses in total. It is also written 30-A2-20.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 30:A2:20:00:00:00 that is 30:A2:20 — 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 ARG Telecom located?: ARG Telecom is listed at No.69, W. Lavasani St. , Tehran Tehran IR 1936938194 in the IEEE OUI registry entry for 30:A2:20. This is the address the organization registered with the IEEE, which may differ from its current operating address.