Which company owns MAC address prefix B4:37:D8?

MAC address prefix B4:37:D8 is registered to D-Link (Shanghai) Limited Corp. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B4:37:D8 has a network interface built by D-Link (Shanghai) Limited Corp..

What is the OUI B4:37:D8?

B4:37:D8 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to D-Link (Shanghai) Limited Corp.. It covers every address from B4:37:D8:00:00:00 to B4:37:D8:FF:FF:FF, or 16,777,216 addresses in total. It is also written B4-37-D8.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in B4:37:D8:00:00:00 that is B4:37:D8 — 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 D-Link (Shanghai) Limited Corp. located?

D-Link (Shanghai) Limited Corp. is listed at Room 612, Floor 6, No.88, Taigu Road, Shanghai CN 200131 in the IEEE OUI registry entry for B4:37:D8. This is the address the organization registered with the IEEE, which may differ from its current operating address.

D-Link (Shanghai) Limited Corp.

MAC address prefix B4:37:D8 is registered to D-Link (Shanghai) Limited Corp. in the IEEE OUI registry. Any device whose MAC address begins with B4:37:D8 has a network interface built by D-Link (Shanghai) Limited Corp.. 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 B4:37:D8:00:00:00 to B4:37:D8:FF:FF:FF.

OUI prefix: B4:37:D8
Hyphen form: B4-37-D8
MAC range: B4:37:D8:00:00:00 – B4:37:D8:FF:FF:FF
Addresses in block: 16,777,216
Organization: D-Link (Shanghai) Limited Corp.
Address: Room 612, Floor 6, No.88, Taigu Road, Shanghai CN 200131
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.

2021-06-10Assigned to "D-Link (Shanghai) Limited Corp."
archived source →
2026-07-17Assigned to "D-Link (Shanghai) Limited Corp."

Nearby in the registry

The prefixes assigned immediately before and after B4:37:D8:

FAQ

Which company owns MAC address prefix B4:37:D8?: MAC address prefix B4:37:D8 is registered to D-Link (Shanghai) Limited Corp. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B4:37:D8 has a network interface built by D-Link (Shanghai) Limited Corp..
What is the OUI B4:37:D8?: B4:37:D8 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to D-Link (Shanghai) Limited Corp.. It covers every address from B4:37:D8:00:00:00 to B4:37:D8:FF:FF:FF, or 16,777,216 addresses in total. It is also written B4-37-D8.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in B4:37:D8:00:00:00 that is B4:37:D8 — 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 D-Link (Shanghai) Limited Corp. located?: D-Link (Shanghai) Limited Corp. is listed at Room 612, Floor 6, No.88, Taigu Road, Shanghai CN 200131 in the IEEE OUI registry entry for B4:37:D8. This is the address the organization registered with the IEEE, which may differ from its current operating address.