Which company owns MAC address prefix C8:90:09?

MAC address prefix C8:90:09 is registered to Budderfly Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C8:90:09 has a network interface built by Budderfly Inc..

What is the OUI C8:90:09?

C8:90:09 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Budderfly Inc.. It covers every address from C8:90:09:00:00:00 to C8:90:09:FF:FF:FF, or 16,777,216 addresses in total. It is also written C8-90-09.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in C8:90:09:00:00:00 that is C8:90:09 — 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 Budderfly Inc. located?

Budderfly Inc. is listed at 2 Trap Falls Road Shelton CT US 06484 in the IEEE OUI registry entry for C8:90:09. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Budderfly Inc.

MAC address prefix C8:90:09 is registered to Budderfly Inc. in the IEEE OUI registry. Any device whose MAC address begins with C8:90:09 has a network interface built by Budderfly 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 C8:90:09:00:00:00 to C8:90:09:FF:FF:FF.

OUI prefix: C8:90:09
Hyphen form: C8-90-09
MAC range: C8:90:09:00:00:00 – C8:90:09:FF:FF:FF
Addresses in block: 16,777,216
Organization: Budderfly Inc.
Address: 2 Trap Falls Road Shelton CT US 06484
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 (3)

The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.

2025-05-13Assigned to "Budderfly, LLC"
archived source →
2025-08-23Renamed from "Budderfly, LLC" to "Budderfly Inc."
archived source →
2026-07-17Assigned to "Budderfly Inc."

Nearby in the registry

The prefixes assigned immediately before and after C8:90:09:

FAQ

Which company owns MAC address prefix C8:90:09?: MAC address prefix C8:90:09 is registered to Budderfly Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C8:90:09 has a network interface built by Budderfly Inc..
What is the OUI C8:90:09?: C8:90:09 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Budderfly Inc.. It covers every address from C8:90:09:00:00:00 to C8:90:09:FF:FF:FF, or 16,777,216 addresses in total. It is also written C8-90-09.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in C8:90:09:00:00:00 that is C8:90:09 — 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 Budderfly Inc. located?: Budderfly Inc. is listed at 2 Trap Falls Road Shelton CT US 06484 in the IEEE OUI registry entry for C8:90:09. This is the address the organization registered with the IEEE, which may differ from its current operating address.