Which company owns MAC address prefix B4:6D:35?

MAC address prefix B4:6D:35 is registered to Dalian Seasky Automation Co;Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B4:6D:35 has a network interface built by Dalian Seasky Automation Co;Ltd.

What is the OUI B4:6D:35?

B4:6D:35 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Dalian Seasky Automation Co;Ltd. It covers every address from B4:6D:35:00:00:00 to B4:6D:35:FF:FF:FF, or 16,777,216 addresses in total. It is also written B4-6D-35.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in B4:6D:35:00:00:00 that is B4:6D:35 — 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 Dalian Seasky Automation Co;Ltd located?

Dalian Seasky Automation Co;Ltd is listed at Room 408, DUT Science & Technology Park Building B, No.80 Software Park Road, High-Tech Industrial Zone, Dalian, Liaoning, China Dalian Liao Ning CN 116023 in the IEEE OUI registry entry for B4:6D:35. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Dalian Seasky Automation Co;Ltd

MAC address prefix B4:6D:35 is registered to Dalian Seasky Automation Co;Ltd in the IEEE OUI registry. Any device whose MAC address begins with B4:6D:35 has a network interface built by Dalian Seasky Automation 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 B4:6D:35:00:00:00 to B4:6D:35:FF:FF:FF.

OUI prefix: B4:6D:35
Hyphen form: B4-6D-35
MAC range: B4:6D:35:00:00:00 – B4:6D:35:FF:FF:FF
Addresses in block: 16,777,216
Organization: Dalian Seasky Automation Co;Ltd
Address: Room 408, DUT Science & Technology Park Building B, No.80 Software Park Road, High-Tech Industrial Zone, Dalian, Liaoning, China Dalian Liao Ning CN 116023
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.

2016-07-29Assigned to "Dalian Seasky Automation Co;Ltd"
archived source →
2026-07-17Assigned to "Dalian Seasky Automation Co;Ltd"

Nearby in the registry

The prefixes assigned immediately before and after B4:6D:35:

FAQ

Which company owns MAC address prefix B4:6D:35?: MAC address prefix B4:6D:35 is registered to Dalian Seasky Automation Co;Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B4:6D:35 has a network interface built by Dalian Seasky Automation Co;Ltd.
What is the OUI B4:6D:35?: B4:6D:35 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Dalian Seasky Automation Co;Ltd. It covers every address from B4:6D:35:00:00:00 to B4:6D:35:FF:FF:FF, or 16,777,216 addresses in total. It is also written B4-6D-35.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in B4:6D:35:00:00:00 that is B4:6D:35 — 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 Dalian Seasky Automation Co;Ltd located?: Dalian Seasky Automation Co;Ltd is listed at Room 408, DUT Science & Technology Park Building B, No.80 Software Park Road, High-Tech Industrial Zone, Dalian, Liaoning, China Dalian Liao Ning CN 116023 in the IEEE OUI registry entry for B4:6D:35. This is the address the organization registered with the IEEE, which may differ from its current operating address.