Which company owns MAC address prefix E0:48:AF?

MAC address prefix E0:48:AF is registered to Premietech Limited in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E0:48:AF has a network interface built by Premietech Limited.

What is the OUI E0:48:AF?

E0:48:AF is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Premietech Limited. It covers every address from E0:48:AF:00:00:00 to E0:48:AF:FF:FF:FF, or 16,777,216 addresses in total. It is also written E0-48-AF.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in E0:48:AF:00:00:00 that is E0:48:AF — 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 Premietech Limited located?

Premietech Limited is listed at Unit 805, Tower 3, Enterprise Square I No. 9 Sheung Yuet Road Kowloon Bay HongKong HK 00000 in the IEEE OUI registry entry for E0:48:AF. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Premietech Limited

MAC address prefix E0:48:AF is registered to Premietech Limited in the IEEE OUI registry. Any device whose MAC address begins with E0:48:AF has a network interface built by Premietech 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 E0:48:AF:00:00:00 to E0:48:AF:FF:FF:FF.

OUI prefix: E0:48:AF
Hyphen form: E0-48-AF
MAC range: E0:48:AF:00:00:00 – E0:48:AF:FF:FF:FF
Addresses in block: 16,777,216
Organization: Premietech Limited
Address: Unit 805, Tower 3, Enterprise Square I No. 9 Sheung Yuet Road Kowloon Bay HongKong HK 00000
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.

2017-09-08Assigned to "Premietech Limited"
archived source →
2026-07-17Assigned to "Premietech Limited"

Nearby in the registry

The prefixes assigned immediately before and after E0:48:AF:

FAQ

Which company owns MAC address prefix E0:48:AF?: MAC address prefix E0:48:AF is registered to Premietech Limited in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E0:48:AF has a network interface built by Premietech Limited.
What is the OUI E0:48:AF?: E0:48:AF is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Premietech Limited. It covers every address from E0:48:AF:00:00:00 to E0:48:AF:FF:FF:FF, or 16,777,216 addresses in total. It is also written E0-48-AF.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in E0:48:AF:00:00:00 that is E0:48:AF — 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 Premietech Limited located?: Premietech Limited is listed at Unit 805, Tower 3, Enterprise Square I No. 9 Sheung Yuet Road Kowloon Bay HongKong HK 00000 in the IEEE OUI registry entry for E0:48:AF. This is the address the organization registered with the IEEE, which may differ from its current operating address.