Which company owns MAC address prefix 38:61:A5?

MAC address prefix 38:61:A5 is registered to Grabango Co in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 38:61:A5 has a network interface built by Grabango Co.

What is the OUI 38:61:A5?

38:61:A5 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Grabango Co. It covers every address from 38:61:A5:00:00:00 to 38:61:A5:FF:FF:FF, or 16,777,216 addresses in total. It is also written 38-61-A5.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 38:61:A5:00:00:00 that is 38:61:A5 — 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 Grabango Co located?

Grabango Co is listed at 2000 Allston Way #60 Berkeley CA US 94701 in the IEEE OUI registry entry for 38:61:A5. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Grabango Co

MAC address prefix 38:61:A5 is registered to Grabango Co in the IEEE OUI registry. Any device whose MAC address begins with 38:61:A5 has a network interface built by Grabango Co. 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 38:61:A5:00:00:00 to 38:61:A5:FF:FF:FF.

OUI prefix: 38:61:A5
Hyphen form: 38-61-A5
MAC range: 38:61:A5:00:00:00 – 38:61:A5:FF:FF:FF
Addresses in block: 16,777,216
Organization: Grabango Co
Address: 2000 Allston Way #60 Berkeley CA US 94701
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 (1)

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

2026-07-17Assigned to "Grabango Co"

Nearby in the registry

The prefixes assigned immediately before and after 38:61:A5:

FAQ

Which company owns MAC address prefix 38:61:A5?: MAC address prefix 38:61:A5 is registered to Grabango Co in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 38:61:A5 has a network interface built by Grabango Co.
What is the OUI 38:61:A5?: 38:61:A5 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Grabango Co. It covers every address from 38:61:A5:00:00:00 to 38:61:A5:FF:FF:FF, or 16,777,216 addresses in total. It is also written 38-61-A5.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 38:61:A5:00:00:00 that is 38:61:A5 — 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 Grabango Co located?: Grabango Co is listed at 2000 Allston Way #60 Berkeley CA US 94701 in the IEEE OUI registry entry for 38:61:A5. This is the address the organization registered with the IEEE, which may differ from its current operating address.