Which company owns MAC address prefix CC:DC:55?

MAC address prefix CC:DC:55 is registered to Dragonchip Limited in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with CC:DC:55 has a network interface built by Dragonchip Limited.

What is the OUI CC:DC:55?

CC:DC:55 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Dragonchip Limited. It covers every address from CC:DC:55:00:00:00 to CC:DC:55:FF:FF:FF, or 16,777,216 addresses in total. It is also written CC-DC-55.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in CC:DC:55:00:00:00 that is CC:DC:55 — 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 Dragonchip Limited located?

Dragonchip Limited is listed at Room 601-2, 6/F, IC Development Centre, No. 6 Science Park West Avenue, Hong Kong Science Park, Shatin, N.T. Hong Kong HK NA in the IEEE OUI registry entry for CC:DC:55. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Dragonchip Limited

MAC address prefix CC:DC:55 is registered to Dragonchip Limited in the IEEE OUI registry. Any device whose MAC address begins with CC:DC:55 has a network interface built by Dragonchip Limited. 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 CC:DC:55:00:00:00 to CC:DC:55:FF:FF:FF.

OUI prefix: CC:DC:55
Hyphen form: CC-DC-55
MAC range: CC:DC:55:00:00:00 – CC:DC:55:FF:FF:FF
Addresses in block: 16,777,216
Organization: Dragonchip Limited
Address: Room 601-2, 6/F, IC Development Centre, No. 6 Science Park West Avenue, Hong Kong Science Park, Shatin, N.T. Hong Kong HK NA
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.

2018-12-21Assigned to "Dragonchip Limited"
archived source →
2026-07-17Assigned to "Dragonchip Limited"

Nearby in the registry

The prefixes assigned immediately before and after CC:DC:55:

FAQ

Which company owns MAC address prefix CC:DC:55?: MAC address prefix CC:DC:55 is registered to Dragonchip Limited in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with CC:DC:55 has a network interface built by Dragonchip Limited.
What is the OUI CC:DC:55?: CC:DC:55 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Dragonchip Limited. It covers every address from CC:DC:55:00:00:00 to CC:DC:55:FF:FF:FF, or 16,777,216 addresses in total. It is also written CC-DC-55.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in CC:DC:55:00:00:00 that is CC:DC:55 — 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 Dragonchip Limited located?: Dragonchip Limited is listed at Room 601-2, 6/F, IC Development Centre, No. 6 Science Park West Avenue, Hong Kong Science Park, Shatin, N.T. Hong Kong HK NA in the IEEE OUI registry entry for CC:DC:55. This is the address the organization registered with the IEEE, which may differ from its current operating address.