Which company owns MAC address prefix D8:D8:66?

MAC address prefix D8:D8:66 is registered to SHENZHEN TOZED TECHNOLOGIES CO.,LTD. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D8:D8:66 has a network interface built by SHENZHEN TOZED TECHNOLOGIES CO.,LTD..

What is the OUI D8:D8:66?

D8:D8:66 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SHENZHEN TOZED TECHNOLOGIES CO.,LTD.. It covers every address from D8:D8:66:00:00:00 to D8:D8:66:FF:FF:FF, or 16,777,216 addresses in total. It is also written D8-D8-66.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in D8:D8:66:00:00:00 that is D8:D8:66 — 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 SHENZHEN TOZED TECHNOLOGIES CO.,LTD. located?

SHENZHEN TOZED TECHNOLOGIES CO.,LTD. is listed at 4F/A1,A2,TIANJI BUILDING,TIAN’AN CYBER PARK,FUTIAN SHENZHEN GUANGDONG CN 518040 in the IEEE OUI registry entry for D8:D8:66. This is the address the organization registered with the IEEE, which may differ from its current operating address.

SHENZHEN TOZED TECHNOLOGIES CO.,LTD.

MAC address prefix D8:D8:66 is registered to SHENZHEN TOZED TECHNOLOGIES CO.,LTD. in the IEEE OUI registry. Any device whose MAC address begins with D8:D8:66 has a network interface built by SHENZHEN TOZED 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 D8:D8:66:00:00:00 to D8:D8:66:FF:FF:FF.

OUI prefix: D8:D8:66
Hyphen form: D8-D8-66
MAC range: D8:D8:66:00:00:00 – D8:D8:66:FF:FF:FF
Addresses in block: 16,777,216
Organization: SHENZHEN TOZED TECHNOLOGIES CO.,LTD.
Address: 4F/A1,A2,TIANJI BUILDING,TIAN’AN CYBER PARK,FUTIAN SHENZHEN GUANGDONG CN 518040
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 "SHENZHEN TOZED TECHNOLOGIES CO.,LTD."
archived source →
2026-07-17Assigned to "SHENZHEN TOZED TECHNOLOGIES CO.,LTD."

Nearby in the registry

The prefixes assigned immediately before and after D8:D8:66:

FAQ

Which company owns MAC address prefix D8:D8:66?: MAC address prefix D8:D8:66 is registered to SHENZHEN TOZED TECHNOLOGIES CO.,LTD. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D8:D8:66 has a network interface built by SHENZHEN TOZED TECHNOLOGIES CO.,LTD..
What is the OUI D8:D8:66?: D8:D8:66 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SHENZHEN TOZED TECHNOLOGIES CO.,LTD.. It covers every address from D8:D8:66:00:00:00 to D8:D8:66:FF:FF:FF, or 16,777,216 addresses in total. It is also written D8-D8-66.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in D8:D8:66:00:00:00 that is D8:D8:66 — 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 SHENZHEN TOZED TECHNOLOGIES CO.,LTD. located?: SHENZHEN TOZED TECHNOLOGIES CO.,LTD. is listed at 4F/A1,A2,TIANJI BUILDING,TIAN’AN CYBER PARK,FUTIAN SHENZHEN GUANGDONG CN 518040 in the IEEE OUI registry entry for D8:D8:66. This is the address the organization registered with the IEEE, which may differ from its current operating address.