Which company owns MAC address prefix FC:3C:E9?

MAC address prefix FC:3C:E9 is registered to Tsingtong Technologies Co, Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with FC:3C:E9 has a network interface built by Tsingtong Technologies Co, Ltd..

What is the OUI FC:3C:E9?

FC:3C:E9 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Tsingtong Technologies Co, Ltd.. It covers every address from FC:3C:E9:00:00:00 to FC:3C:E9:FF:FF:FF, or 16,777,216 addresses in total. It is also written FC-3C-E9.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in FC:3C:E9:00:00:00 that is FC:3C:E9 — 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 Tsingtong Technologies Co, Ltd. located?

Tsingtong Technologies Co, Ltd. is listed at Rm A03-72, Floor B1, Building 1, No.13 Dazhongsi, Haidian District Beijing CN 100098 in the IEEE OUI registry entry for FC:3C:E9. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Tsingtong Technologies Co, Ltd.

MAC address prefix FC:3C:E9 is registered to Tsingtong Technologies Co, Ltd. in the IEEE OUI registry. Any device whose MAC address begins with FC:3C:E9 has a network interface built by Tsingtong Technologies 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 FC:3C:E9:00:00:00 to FC:3C:E9:FF:FF:FF.

OUI prefix: FC:3C:E9
Hyphen form: FC-3C-E9
MAC range: FC:3C:E9:00:00:00 – FC:3C:E9:FF:FF:FF
Addresses in block: 16,777,216
Organization: Tsingtong Technologies Co, Ltd.
Address: Rm A03-72, Floor B1, Building 1, No.13 Dazhongsi, Haidian District Beijing CN 100098
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.

2017-09-08Assigned to "Tsingtong Technologies Co, Ltd."
archived source →
2026-07-17Assigned to "Tsingtong Technologies Co, Ltd."

Nearby in the registry

The prefixes assigned immediately before and after FC:3C:E9:

FAQ

Which company owns MAC address prefix FC:3C:E9?: MAC address prefix FC:3C:E9 is registered to Tsingtong Technologies Co, Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with FC:3C:E9 has a network interface built by Tsingtong Technologies Co, Ltd..
What is the OUI FC:3C:E9?: FC:3C:E9 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Tsingtong Technologies Co, Ltd.. It covers every address from FC:3C:E9:00:00:00 to FC:3C:E9:FF:FF:FF, or 16,777,216 addresses in total. It is also written FC-3C-E9.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in FC:3C:E9:00:00:00 that is FC:3C:E9 — 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 Tsingtong Technologies Co, Ltd. located?: Tsingtong Technologies Co, Ltd. is listed at Rm A03-72, Floor B1, Building 1, No.13 Dazhongsi, Haidian District Beijing CN 100098 in the IEEE OUI registry entry for FC:3C:E9. This is the address the organization registered with the IEEE, which may differ from its current operating address.