Which company owns MAC address prefix EC:5B:73?

MAC address prefix EC:5B:73 is registered to Advanced & Wise Technology Corp. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with EC:5B:73 has a network interface built by Advanced & Wise Technology Corp..

What is the OUI EC:5B:73?

EC:5B:73 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Advanced & Wise Technology Corp.. It covers every address from EC:5B:73:00:00:00 to EC:5B:73:FF:FF:FF, or 16,777,216 addresses in total. It is also written EC-5B-73.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in EC:5B:73:00:00:00 that is EC:5B:73 — 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 Advanced & Wise Technology Corp. located?

Advanced & Wise Technology Corp. is listed at 5F, No. 3-2, Industry East 9th Road, Hsinchu Science Park, Hsinchu City Hsinchu TW 30075 in the IEEE OUI registry entry for EC:5B:73. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Advanced & Wise Technology Corp.

MAC address prefix EC:5B:73 is registered to Advanced & Wise Technology Corp. in the IEEE OUI registry. Any device whose MAC address begins with EC:5B:73 has a network interface built by Advanced & Wise Technology 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 EC:5B:73:00:00:00 to EC:5B:73:FF:FF:FF.

OUI prefix: EC:5B:73
Hyphen form: EC-5B-73
MAC range: EC:5B:73:00:00:00 – EC:5B:73:FF:FF:FF
Addresses in block: 16,777,216
Organization: Advanced & Wise Technology Corp.
Address: 5F, No. 3-2, Industry East 9th Road, Hsinchu Science Park, Hsinchu City Hsinchu TW 30075
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.

2019-07-04Assigned to "Advanced & Wise Technology Corp."
archived source →
2026-07-17Assigned to "Advanced & Wise Technology Corp."

Nearby in the registry

The prefixes assigned immediately before and after EC:5B:73:

FAQ

Which company owns MAC address prefix EC:5B:73?: MAC address prefix EC:5B:73 is registered to Advanced & Wise Technology Corp. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with EC:5B:73 has a network interface built by Advanced & Wise Technology Corp..
What is the OUI EC:5B:73?: EC:5B:73 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Advanced & Wise Technology Corp.. It covers every address from EC:5B:73:00:00:00 to EC:5B:73:FF:FF:FF, or 16,777,216 addresses in total. It is also written EC-5B-73.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in EC:5B:73:00:00:00 that is EC:5B:73 — 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 Advanced & Wise Technology Corp. located?: Advanced & Wise Technology Corp. is listed at 5F, No. 3-2, Industry East 9th Road, Hsinchu Science Park, Hsinchu City Hsinchu TW 30075 in the IEEE OUI registry entry for EC:5B:73. This is the address the organization registered with the IEEE, which may differ from its current operating address.