Which company owns MAC address prefix 44:8D:BF?

MAC address prefix 44:8D:BF is registered to Rhino Mobility LLC in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 44:8D:BF has a network interface built by Rhino Mobility LLC.

What is the OUI 44:8D:BF?

44:8D:BF is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Rhino Mobility LLC. It covers every address from 44:8D:BF:00:00:00 to 44:8D:BF:FF:FF:FF, or 16,777,216 addresses in total. It is also written 44-8D-BF.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 44:8D:BF:00:00:00 that is 44:8D:BF — 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 Rhino Mobility LLC located?

Rhino Mobility LLC is listed at 8 The Green, Suite A Dover DE US 19901 in the IEEE OUI registry entry for 44:8D:BF. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Rhino Mobility LLC

MAC address prefix 44:8D:BF is registered to Rhino Mobility LLC in the IEEE OUI registry. Any device whose MAC address begins with 44:8D:BF has a network interface built by Rhino Mobility 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 44:8D:BF:00:00:00 to 44:8D:BF:FF:FF:FF.

OUI prefix: 44:8D:BF
Hyphen form: 44-8D-BF
MAC range: 44:8D:BF:00:00:00 – 44:8D:BF:FF:FF:FF
Addresses in block: 16,777,216
Organization: Rhino Mobility LLC
Address: 8 The Green, Suite A Dover DE US 19901
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.

2020-03-21Assigned to "Rhino Mobility LLC"
archived source →
2026-07-17Assigned to "Rhino Mobility LLC"

Nearby in the registry

The prefixes assigned immediately before and after 44:8D:BF:

FAQ

Which company owns MAC address prefix 44:8D:BF?: MAC address prefix 44:8D:BF is registered to Rhino Mobility LLC in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 44:8D:BF has a network interface built by Rhino Mobility LLC.
What is the OUI 44:8D:BF?: 44:8D:BF is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Rhino Mobility LLC. It covers every address from 44:8D:BF:00:00:00 to 44:8D:BF:FF:FF:FF, or 16,777,216 addresses in total. It is also written 44-8D-BF.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 44:8D:BF:00:00:00 that is 44:8D:BF — 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 Rhino Mobility LLC located?: Rhino Mobility LLC is listed at 8 The Green, Suite A Dover DE US 19901 in the IEEE OUI registry entry for 44:8D:BF. This is the address the organization registered with the IEEE, which may differ from its current operating address.