Which company owns MAC address prefix 28:FE:DE?

MAC address prefix 28:FE:DE is registered to COMESTA, Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 28:FE:DE has a network interface built by COMESTA, Inc..

What is the OUI 28:FE:DE?

28:FE:DE is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to COMESTA, Inc.. It covers every address from 28:FE:DE:00:00:00 to 28:FE:DE:FF:FF:FF, or 16,777,216 addresses in total. It is also written 28-FE-DE.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 28:FE:DE:00:00:00 that is 28:FE:DE — 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 COMESTA, Inc. located?

COMESTA, Inc. is listed at Techno1-ro 61-7, Yuseong-gu, Daejeon KR 34014 in the IEEE OUI registry entry for 28:FE:DE. This is the address the organization registered with the IEEE, which may differ from its current operating address.

COMESTA, Inc.

MAC address prefix 28:FE:DE is registered to COMESTA, Inc. in the IEEE OUI registry. Any device whose MAC address begins with 28:FE:DE has a network interface built by COMESTA, Inc.. 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 28:FE:DE:00:00:00 to 28:FE:DE:FF:FF:FF.

OUI prefix: 28:FE:DE
Hyphen form: 28-FE-DE
MAC range: 28:FE:DE:00:00:00 – 28:FE:DE:FF:FF:FF
Addresses in block: 16,777,216
Organization: COMESTA, Inc.
Address: Techno1-ro 61-7, Yuseong-gu, Daejeon KR 34014
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.

2018-12-21Assigned to "COMESTA, Inc."
archived source →
2026-07-17Assigned to "COMESTA, Inc."

Nearby in the registry

The prefixes assigned immediately before and after 28:FE:DE:

FAQ

Which company owns MAC address prefix 28:FE:DE?: MAC address prefix 28:FE:DE is registered to COMESTA, Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 28:FE:DE has a network interface built by COMESTA, Inc..
What is the OUI 28:FE:DE?: 28:FE:DE is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to COMESTA, Inc.. It covers every address from 28:FE:DE:00:00:00 to 28:FE:DE:FF:FF:FF, or 16,777,216 addresses in total. It is also written 28-FE-DE.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 28:FE:DE:00:00:00 that is 28:FE:DE — 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 COMESTA, Inc. located?: COMESTA, Inc. is listed at Techno1-ro 61-7, Yuseong-gu, Daejeon KR 34014 in the IEEE OUI registry entry for 28:FE:DE. This is the address the organization registered with the IEEE, which may differ from its current operating address.