Which company owns MAC address prefix 40:89:A8?

MAC address prefix 40:89:A8 is registered to WiredIQ, LLC in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 40:89:A8 has a network interface built by WiredIQ, LLC.

What is the OUI 40:89:A8?

40:89:A8 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to WiredIQ, LLC. It covers every address from 40:89:A8:00:00:00 to 40:89:A8:FF:FF:FF, or 16,777,216 addresses in total. It is also written 40-89-A8.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 40:89:A8:00:00:00 that is 40:89:A8 — 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 WiredIQ, LLC located?

WiredIQ, LLC is listed at 1 South School Avenue sarasota FL US 34237 in the IEEE OUI registry entry for 40:89:A8. This is the address the organization registered with the IEEE, which may differ from its current operating address.

WiredIQ, LLC

MAC address prefix 40:89:A8 is registered to WiredIQ, LLC in the IEEE OUI registry. Any device whose MAC address begins with 40:89:A8 has a network interface built by WiredIQ, LLC. 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 40:89:A8:00:00:00 to 40:89:A8:FF:FF:FF.

OUI prefix: 40:89:A8
Hyphen form: 40-89-A8
MAC range: 40:89:A8:00:00:00 – 40:89:A8:FF:FF:FF
Addresses in block: 16,777,216
Organization: WiredIQ, LLC
Address: 1 South School Avenue sarasota FL US 34237
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.

2020-11-28Assigned to "WiredIQ, LLC"
archived source →
2026-07-17Assigned to "WiredIQ, LLC"

Nearby in the registry

The prefixes assigned immediately before and after 40:89:A8:

FAQ

Which company owns MAC address prefix 40:89:A8?: MAC address prefix 40:89:A8 is registered to WiredIQ, LLC in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 40:89:A8 has a network interface built by WiredIQ, LLC.
What is the OUI 40:89:A8?: 40:89:A8 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to WiredIQ, LLC. It covers every address from 40:89:A8:00:00:00 to 40:89:A8:FF:FF:FF, or 16,777,216 addresses in total. It is also written 40-89-A8.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 40:89:A8:00:00:00 that is 40:89:A8 — 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 WiredIQ, LLC located?: WiredIQ, LLC is listed at 1 South School Avenue sarasota FL US 34237 in the IEEE OUI registry entry for 40:89:A8. This is the address the organization registered with the IEEE, which may differ from its current operating address.