Which company owns MAC address prefix C4:70:0B?

MAC address prefix C4:70:0B is registered to GUANGZHOU CHIP TECHNOLOGIES CO.,LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C4:70:0B has a network interface built by GUANGZHOU CHIP TECHNOLOGIES CO.,LTD.

What is the OUI C4:70:0B?

C4:70:0B is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to GUANGZHOU CHIP TECHNOLOGIES CO.,LTD. It covers every address from C4:70:0B:00:00:00 to C4:70:0B:FF:FF:FF, or 16,777,216 addresses in total. It is also written C4-70-0B.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in C4:70:0B:00:00:00 that is C4:70:0B — 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 GUANGZHOU CHIP TECHNOLOGIES CO.,LTD located?

GUANGZHOU CHIP TECHNOLOGIES CO.,LTD is listed at 4th floor, Building J of JiTang Industrial Zone, No. 8 NanYun fifth road, HuangPu District Guangzhou Guangdong CN 510700 in the IEEE OUI registry entry for C4:70:0B. This is the address the organization registered with the IEEE, which may differ from its current operating address.

GUANGZHOU CHIP TECHNOLOGIES CO.,LTD

MAC address prefix C4:70:0B is registered to GUANGZHOU CHIP TECHNOLOGIES CO.,LTD in the IEEE OUI registry. Any device whose MAC address begins with C4:70:0B has a network interface built by GUANGZHOU CHIP 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 C4:70:0B:00:00:00 to C4:70:0B:FF:FF:FF.

OUI prefix: C4:70:0B
Hyphen form: C4-70-0B
MAC range: C4:70:0B:00:00:00 – C4:70:0B:FF:FF:FF
Addresses in block: 16,777,216
Organization: GUANGZHOU CHIP TECHNOLOGIES CO.,LTD
Address: 4th floor, Building J of JiTang Industrial Zone, No. 8 NanYun fifth road, HuangPu District Guangzhou Guangdong CN 510700
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 "GUANGZHOU CHIP TECHNOLOGIES CO.,LTD"
archived source →
2026-07-17Assigned to "GUANGZHOU CHIP TECHNOLOGIES CO.,LTD"

Nearby in the registry

The prefixes assigned immediately before and after C4:70:0B:

FAQ

Which company owns MAC address prefix C4:70:0B?: MAC address prefix C4:70:0B is registered to GUANGZHOU CHIP TECHNOLOGIES CO.,LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C4:70:0B has a network interface built by GUANGZHOU CHIP TECHNOLOGIES CO.,LTD.
What is the OUI C4:70:0B?: C4:70:0B is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to GUANGZHOU CHIP TECHNOLOGIES CO.,LTD. It covers every address from C4:70:0B:00:00:00 to C4:70:0B:FF:FF:FF, or 16,777,216 addresses in total. It is also written C4-70-0B.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in C4:70:0B:00:00:00 that is C4:70:0B — 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 GUANGZHOU CHIP TECHNOLOGIES CO.,LTD located?: GUANGZHOU CHIP TECHNOLOGIES CO.,LTD is listed at 4th floor, Building J of JiTang Industrial Zone, No. 8 NanYun fifth road, HuangPu District Guangzhou Guangdong CN 510700 in the IEEE OUI registry entry for C4:70:0B. This is the address the organization registered with the IEEE, which may differ from its current operating address.