Which company owns MAC address prefix B8:FB:AF?

MAC address prefix B8:FB:AF is registered to Xiamen IPRT Technology CO.,LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B8:FB:AF has a network interface built by Xiamen IPRT Technology CO.,LTD.

What is the OUI B8:FB:AF?

B8:FB:AF is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Xiamen IPRT Technology CO.,LTD. It covers every address from B8:FB:AF:00:00:00 to B8:FB:AF:FF:FF:FF, or 16,777,216 addresses in total. It is also written B8-FB-AF.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in B8:FB:AF:00:00:00 that is B8:FB:AF — 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 Xiamen IPRT Technology CO.,LTD located?

Xiamen IPRT Technology CO.,LTD is listed at 3~5Floor,No.101,Huili Industry Park,Meixi Road,Tongan District,Xiamen,China. xiamen fujian CN 361000 in the IEEE OUI registry entry for B8:FB:AF. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Xiamen IPRT Technology CO.,LTD

MAC address prefix B8:FB:AF is registered to Xiamen IPRT Technology CO.,LTD in the IEEE OUI registry. Any device whose MAC address begins with B8:FB:AF has a network interface built by Xiamen IPRT Technology CO.,LTD. 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 B8:FB:AF:00:00:00 to B8:FB:AF:FF:FF:FF.

OUI prefix: B8:FB:AF
Hyphen form: B8-FB-AF
MAC range: B8:FB:AF:00:00:00 – B8:FB:AF:FF:FF:FF
Addresses in block: 16,777,216
Organization: Xiamen IPRT Technology CO.,LTD
Address: 3~5Floor,No.101,Huili Industry Park,Meixi Road,Tongan District,Xiamen,China. xiamen fujian CN 361000
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 "Xiamen IPRT Technology CO.,LTD"

Nearby in the registry

The prefixes assigned immediately before and after B8:FB:AF:

FAQ

Which company owns MAC address prefix B8:FB:AF?: MAC address prefix B8:FB:AF is registered to Xiamen IPRT Technology CO.,LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B8:FB:AF has a network interface built by Xiamen IPRT Technology CO.,LTD.
What is the OUI B8:FB:AF?: B8:FB:AF is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Xiamen IPRT Technology CO.,LTD. It covers every address from B8:FB:AF:00:00:00 to B8:FB:AF:FF:FF:FF, or 16,777,216 addresses in total. It is also written B8-FB-AF.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in B8:FB:AF:00:00:00 that is B8:FB:AF — 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 Xiamen IPRT Technology CO.,LTD located?: Xiamen IPRT Technology CO.,LTD is listed at 3~5Floor,No.101,Huili Industry Park,Meixi Road,Tongan District,Xiamen,China. xiamen fujian CN 361000 in the IEEE OUI registry entry for B8:FB:AF. This is the address the organization registered with the IEEE, which may differ from its current operating address.