Which company owns MAC address prefix C0:53:36?

MAC address prefix C0:53:36 is registered to Beijing National Railway Research & Design Institute of Signal & Communication Group Co..Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C0:53:36 has a network interface built by Beijing National Railway Research & Design Institute of Signal & Communication Group Co..Ltd..

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in C0:53:36:00:00:00 that is C0:53:36 — 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.

Beijing National Railway Research & Design Institute of Signal & Communication Group Co..Ltd.

MAC address prefix C0:53:36 is registered to Beijing National Railway Research & Design Institute of Signal & Communication Group Co..Ltd. in the IEEE OUI registry. Any device whose MAC address begins with C0:53:36 has a network interface built by Beijing National Railway Research & Design Institute of Signal & Communication Group 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 C0:53:36:00:00:00 to C0:53:36:FF:FF:FF.

OUI prefix: C0:53:36
Hyphen form: C0-53-36
MAC range: C0:53:36:00:00:00 – C0:53:36:FF:FF:FF
Addresses in block: 16,777,216
Organization: Beijing National Railway Research & Design Institute of Signal & Communication Group Co..Ltd.
Address: 7 floor, No.1 Automobile Museum South Road, Fengtai Science and Technology Park, Beijing Beijing CN 100070
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 "Beijing National Railway Research & Design Institute of Signal & Communication Group Co..Ltd."
archived source →
2026-07-17Assigned to "Beijing National Railway Research & Design Institute of Signal & Communication Group Co..Ltd."

Nearby in the registry

The prefixes assigned immediately before and after C0:53:36:

FAQ

Which company owns MAC address prefix C0:53:36?: MAC address prefix C0:53:36 is registered to Beijing National Railway Research & Design Institute of Signal & Communication Group Co..Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C0:53:36 has a network interface built by Beijing National Railway Research & Design Institute of Signal & Communication Group Co..Ltd..
What is the OUI C0:53:36?: C0:53:36 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Beijing National Railway Research & Design Institute of Signal & Communication Group Co..Ltd.. It covers every address from C0:53:36:00:00:00 to C0:53:36:FF:FF:FF, or 16,777,216 addresses in total. It is also written C0-53-36.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in C0:53:36:00:00:00 that is C0:53:36 — 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 Beijing National Railway Research & Design Institute of Signal & Communication Group Co..Ltd. located?: Beijing National Railway Research & Design Institute of Signal & Communication Group Co..Ltd. is listed at 7 floor, No.1 Automobile Museum South Road, Fengtai Science and Technology Park, Beijing Beijing CN 100070 in the IEEE OUI registry entry for C0:53:36. This is the address the organization registered with the IEEE, which may differ from its current operating address.