Which company owns MAC address prefix DC:15:DB?

MAC address prefix DC:15:DB is registered to Ge Ruili Intelligent Technology ( Beijing ) Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with DC:15:DB has a network interface built by Ge Ruili Intelligent Technology ( Beijing ) Co., Ltd..

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in DC:15:DB:00:00:00 that is DC:15:DB — 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.

Ge Ruili Intelligent Technology ( Beijing ) Co., Ltd.

MAC address prefix DC:15:DB is registered to Ge Ruili Intelligent Technology ( Beijing ) Co., Ltd. in the IEEE OUI registry. Any device whose MAC address begins with DC:15:DB has a network interface built by Ge Ruili Intelligent Technology ( Beijing ) 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 DC:15:DB:00:00:00 to DC:15:DB:FF:FF:FF.

OUI prefix: DC:15:DB
Hyphen form: DC-15-DB
MAC range: DC:15:DB:00:00:00 – DC:15:DB:FF:FF:FF
Addresses in block: 16,777,216
Organization: Ge Ruili Intelligent Technology ( Beijing ) Co., Ltd.
Address: Room 821, block E, No.6 Taiping Street, Xicheng District Beijing CN 100005
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 "Ge Ruili Intelligent Technology ( Beijing ) Co., Ltd."
archived source →
2026-07-17Assigned to "Ge Ruili Intelligent Technology ( Beijing ) Co., Ltd."

Nearby in the registry

The prefixes assigned immediately before and after DC:15:DB:

FAQ

Which company owns MAC address prefix DC:15:DB?: MAC address prefix DC:15:DB is registered to Ge Ruili Intelligent Technology ( Beijing ) Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with DC:15:DB has a network interface built by Ge Ruili Intelligent Technology ( Beijing ) Co., Ltd..
What is the OUI DC:15:DB?: DC:15:DB is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Ge Ruili Intelligent Technology ( Beijing ) Co., Ltd.. It covers every address from DC:15:DB:00:00:00 to DC:15:DB:FF:FF:FF, or 16,777,216 addresses in total. It is also written DC-15-DB.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in DC:15:DB:00:00:00 that is DC:15:DB — 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 Ge Ruili Intelligent Technology ( Beijing ) Co., Ltd. located?: Ge Ruili Intelligent Technology ( Beijing ) Co., Ltd. is listed at Room 821, block E, No.6 Taiping Street, Xicheng District Beijing CN 100005 in the IEEE OUI registry entry for DC:15:DB. This is the address the organization registered with the IEEE, which may differ from its current operating address.