Which company owns MAC address prefix BC:45:48?

MAC address prefix BC:45:48 is registered to Beijing gpthink technology co.,LTD. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with BC:45:48 has a network interface built by Beijing gpthink technology co.,LTD..

What is the OUI BC:45:48?

BC:45:48 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Beijing gpthink technology co.,LTD.. It covers every address from BC:45:48:00:00:00 to BC:45:48:FF:FF:FF, or 16,777,216 addresses in total. It is also written BC-45-48.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in BC:45:48:00:00:00 that is BC:45:48 — 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 gpthink technology co.,LTD. located?

Beijing gpthink technology co.,LTD. is listed at Building 6-4, Jinke Lane, Industrial Zone, Daxing District, Beijing Beijing CN 102627 in the IEEE OUI registry entry for BC:45:48. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Beijing gpthink technology co.,LTD.

MAC address prefix BC:45:48 is registered to Beijing gpthink technology co.,LTD. in the IEEE OUI registry. Any device whose MAC address begins with BC:45:48 has a network interface built by Beijing gpthink technology 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 BC:45:48:00:00:00 to BC:45:48:FF:FF:FF.

OUI prefix: BC:45:48
Hyphen form: BC-45-48
MAC range: BC:45:48:00:00:00 – BC:45:48:FF:FF:FF
Addresses in block: 16,777,216
Organization: Beijing gpthink technology co.,LTD.
Address: Building 6-4, Jinke Lane, Industrial Zone, Daxing District, Beijing Beijing CN 102627
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.

2024-11-20Assigned to "Beijing gpthink technology co.,LTD."
archived source →
2026-07-17Assigned to "Beijing gpthink technology co.,LTD."

Nearby in the registry

The prefixes assigned immediately before and after BC:45:48:

FAQ

Which company owns MAC address prefix BC:45:48?: MAC address prefix BC:45:48 is registered to Beijing gpthink technology co.,LTD. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with BC:45:48 has a network interface built by Beijing gpthink technology co.,LTD..
What is the OUI BC:45:48?: BC:45:48 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Beijing gpthink technology co.,LTD.. It covers every address from BC:45:48:00:00:00 to BC:45:48:FF:FF:FF, or 16,777,216 addresses in total. It is also written BC-45-48.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in BC:45:48:00:00:00 that is BC:45:48 — 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 gpthink technology co.,LTD. located?: Beijing gpthink technology co.,LTD. is listed at Building 6-4, Jinke Lane, Industrial Zone, Daxing District, Beijing Beijing CN 102627 in the IEEE OUI registry entry for BC:45:48. This is the address the organization registered with the IEEE, which may differ from its current operating address.