Which company owns MAC address prefix 00:1E:33?

MAC address prefix 00:1E:33 is registered to INVENTEC CORPORATION in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:1E:33 has a network interface built by INVENTEC CORPORATION.

What is the OUI 00:1E:33?

00:1E:33 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to INVENTEC CORPORATION. It covers every address from 00:1E:33:00:00:00 to 00:1E:33:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-1E-33.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 00:1E:33:00:00:00 that is 00:1E:33 — 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 INVENTEC CORPORATION located?

INVENTEC CORPORATION is listed at Inventec Building, 66 Hou-Kang Street Taipei TW 111 in the IEEE OUI registry entry for 00:1E:33. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does INVENTEC CORPORATION own?

INVENTEC CORPORATION holds 7 OUI prefixes in the IEEE registry, of which 00:1E:33 is one. A device made by INVENTEC CORPORATION could carry a MAC address from any of them.

INVENTEC CORPORATION

MAC address prefix 00:1E:33 is registered to INVENTEC CORPORATION in the IEEE OUI registry. Any device whose MAC address begins with 00:1E:33 has a network interface built by INVENTEC CORPORATION. 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 00:1E:33:00:00:00 to 00:1E:33:FF:FF:FF.

OUI prefix: 00:1E:33
Hyphen form: 00-1E-33
MAC range: 00:1E:33:00:00:00 – 00:1E:33:FF:FF:FF
Addresses in block: 16,777,216
Organization: INVENTEC CORPORATION
Address: Inventec Building, 66 Hou-Kang Street Taipei TW 111
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.

Other prefixes from INVENTEC CORPORATION

INVENTEC CORPORATION holds 7 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

Assignment history (3)

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 "INVENTEC Corporation"
archived source →
2018-12-21Renamed from "INVENTEC Corporation" to "INVENTEC CORPORATION"
archived source →
2026-07-17Assigned to "INVENTEC CORPORATION"

Nearby in the registry

The prefixes assigned immediately before and after 00:1E:33:

FAQ

Which company owns MAC address prefix 00:1E:33?: MAC address prefix 00:1E:33 is registered to INVENTEC CORPORATION in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:1E:33 has a network interface built by INVENTEC CORPORATION.
What is the OUI 00:1E:33?: 00:1E:33 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to INVENTEC CORPORATION. It covers every address from 00:1E:33:00:00:00 to 00:1E:33:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-1E-33.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 00:1E:33:00:00:00 that is 00:1E:33 — 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 INVENTEC CORPORATION located?: INVENTEC CORPORATION is listed at Inventec Building, 66 Hou-Kang Street Taipei TW 111 in the IEEE OUI registry entry for 00:1E:33. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does INVENTEC CORPORATION own?: INVENTEC CORPORATION holds 7 OUI prefixes in the IEEE registry, of which 00:1E:33 is one. A device made by INVENTEC CORPORATION could carry a MAC address from any of them.