Which company owns MAC address prefix 00:1D:AA?

MAC address prefix 00:1D:AA is registered to DrayTek Corp. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:1D:AA has a network interface built by DrayTek Corp..

What is the OUI 00:1D:AA?

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

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 00:1D:AA:00:00:00 that is 00:1D:AA — 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 DrayTek Corp. located?

DrayTek Corp. is listed at No. 26, Fu-Shing Road Hsin-Chu TW 303 in the IEEE OUI registry entry for 00:1D:AA. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does DrayTek Corp. own?

DrayTek Corp. holds 3 OUI prefixes in the IEEE registry, of which 00:1D:AA is one. A device made by DrayTek Corp. could carry a MAC address from any of them.

DrayTek Corp.

MAC address prefix 00:1D:AA is registered to DrayTek Corp. in the IEEE OUI registry. Any device whose MAC address begins with 00:1D:AA has a network interface built by DrayTek Corp.. 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 00:1D:AA:00:00:00 to 00:1D:AA:FF:FF:FF.

OUI prefix: 00:1D:AA
Hyphen form: 00-1D-AA
MAC range: 00:1D:AA:00:00:00 – 00:1D:AA:FF:FF:FF
Addresses in block: 16,777,216
Organization: DrayTek Corp.
Address: No. 26, Fu-Shing Road Hsin-Chu TW 303
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 DrayTek Corp.

DrayTek Corp. holds 3 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

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 "DrayTek Corp."
archived source →
2026-07-17Assigned to "DrayTek Corp."

Nearby in the registry

The prefixes assigned immediately before and after 00:1D:AA:

FAQ

Which company owns MAC address prefix 00:1D:AA?: MAC address prefix 00:1D:AA is registered to DrayTek Corp. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:1D:AA has a network interface built by DrayTek Corp..
What is the OUI 00:1D:AA?: 00:1D:AA is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to DrayTek Corp.. It covers every address from 00:1D:AA:00:00:00 to 00:1D:AA:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-1D-AA.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 00:1D:AA:00:00:00 that is 00:1D:AA — 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 DrayTek Corp. located?: DrayTek Corp. is listed at No. 26, Fu-Shing Road Hsin-Chu TW 303 in the IEEE OUI registry entry for 00:1D:AA. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does DrayTek Corp. own?: DrayTek Corp. holds 3 OUI prefixes in the IEEE registry, of which 00:1D:AA is one. A device made by DrayTek Corp. could carry a MAC address from any of them.