Which company owns MAC address prefix 30:23:CD?

MAC address prefix 30:23:CD is registered to FUJIAN STAR-NET COMMUNICATION CO.,LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 30:23:CD has a network interface built by FUJIAN STAR-NET COMMUNICATION CO.,LTD.

What is the OUI 30:23:CD?

30:23:CD is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to FUJIAN STAR-NET COMMUNICATION CO.,LTD. It covers every address from 30:23:CD:00:00:00 to 30:23:CD:FF:FF:FF, or 16,777,216 addresses in total. It is also written 30-23-CD.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 30:23:CD:00:00:00 that is 30:23:CD — 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 FUJIAN STAR-NET COMMUNICATION CO.,LTD located?

FUJIAN STAR-NET COMMUNICATION CO.,LTD is listed at 19-22# Building, Star-net Science Plaza, Juyuanzhou, FUZHOU FUJIAN CN 350002 in the IEEE OUI registry entry for 30:23:CD. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does FUJIAN STAR-NET COMMUNICATION CO.,LTD own?

FUJIAN STAR-NET COMMUNICATION CO.,LTD holds 27 OUI prefixes in the IEEE registry, of which 30:23:CD is one. A device made by FUJIAN STAR-NET COMMUNICATION CO.,LTD could carry a MAC address from any of them.

FUJIAN STAR-NET COMMUNICATION CO.,LTD

MAC address prefix 30:23:CD is registered to FUJIAN STAR-NET COMMUNICATION CO.,LTD in the IEEE OUI registry. Any device whose MAC address begins with 30:23:CD has a network interface built by FUJIAN STAR-NET COMMUNICATION 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 30:23:CD:00:00:00 to 30:23:CD:FF:FF:FF.

OUI prefix: 30:23:CD
Hyphen form: 30-23-CD
MAC range: 30:23:CD:00:00:00 – 30:23:CD:FF:FF:FF
Addresses in block: 16,777,216
Organization: FUJIAN STAR-NET COMMUNICATION CO.,LTD
Address: 19-22# Building, Star-net Science Plaza, Juyuanzhou, FUZHOU FUJIAN CN 350002
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.

Other prefixes from FUJIAN STAR-NET COMMUNICATION CO.,LTD

FUJIAN STAR-NET COMMUNICATION CO.,LTD holds 27 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

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 "FUJIAN STAR-NET COMMUNICATION CO.,LTD"
archived source →
2026-07-17Assigned to "FUJIAN STAR-NET COMMUNICATION CO.,LTD"

Nearby in the registry

The prefixes assigned immediately before and after 30:23:CD:

FAQ

Which company owns MAC address prefix 30:23:CD?: MAC address prefix 30:23:CD is registered to FUJIAN STAR-NET COMMUNICATION CO.,LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 30:23:CD has a network interface built by FUJIAN STAR-NET COMMUNICATION CO.,LTD.
What is the OUI 30:23:CD?: 30:23:CD is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to FUJIAN STAR-NET COMMUNICATION CO.,LTD. It covers every address from 30:23:CD:00:00:00 to 30:23:CD:FF:FF:FF, or 16,777,216 addresses in total. It is also written 30-23-CD.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 30:23:CD:00:00:00 that is 30:23:CD — 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 FUJIAN STAR-NET COMMUNICATION CO.,LTD located?: FUJIAN STAR-NET COMMUNICATION CO.,LTD is listed at 19-22# Building, Star-net Science Plaza, Juyuanzhou, FUZHOU FUJIAN CN 350002 in the IEEE OUI registry entry for 30:23:CD. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does FUJIAN STAR-NET COMMUNICATION CO.,LTD own?: FUJIAN STAR-NET COMMUNICATION CO.,LTD holds 27 OUI prefixes in the IEEE registry, of which 30:23:CD is one. A device made by FUJIAN STAR-NET COMMUNICATION CO.,LTD could carry a MAC address from any of them.