Which company owns MAC address prefix A4:C2:AB?

MAC address prefix A4:C2:AB is registered to Hangzhou LEAD-IT Information & Technology Co.,Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A4:C2:AB has a network interface built by Hangzhou LEAD-IT Information & Technology Co.,Ltd.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in A4:C2:AB:00:00:00 that is A4:C2:AB — 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.

Hangzhou LEAD-IT Information & Technology Co.,Ltd

MAC address prefix A4:C2:AB is registered to Hangzhou LEAD-IT Information & Technology Co.,Ltd in the IEEE OUI registry. Any device whose MAC address begins with A4:C2:AB has a network interface built by Hangzhou LEAD-IT Information & 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 A4:C2:AB:00:00:00 to A4:C2:AB:FF:FF:FF.

OUI prefix: A4:C2:AB
Hyphen form: A4-C2-AB
MAC range: A4:C2:AB:00:00:00 – A4:C2:AB:FF:FF:FF
Addresses in block: 16,777,216
Organization: Hangzhou LEAD-IT Information & Technology Co.,Ltd
Address: F2 Builder B,Xidomen Road NO.22 Hangzhou Zhejiang CN 310012
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.

2016-07-29Assigned to "Hangzhou LEAD-IT Information & Technology Co.,Ltd"
archived source →
2026-07-17Assigned to "Hangzhou LEAD-IT Information & Technology Co.,Ltd"

Nearby in the registry

The prefixes assigned immediately before and after A4:C2:AB:

FAQ

Which company owns MAC address prefix A4:C2:AB?: MAC address prefix A4:C2:AB is registered to Hangzhou LEAD-IT Information & Technology Co.,Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A4:C2:AB has a network interface built by Hangzhou LEAD-IT Information & Technology Co.,Ltd.
What is the OUI A4:C2:AB?: A4:C2:AB is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Hangzhou LEAD-IT Information & Technology Co.,Ltd. It covers every address from A4:C2:AB:00:00:00 to A4:C2:AB:FF:FF:FF, or 16,777,216 addresses in total. It is also written A4-C2-AB.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in A4:C2:AB:00:00:00 that is A4:C2:AB — 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 Hangzhou LEAD-IT Information & Technology Co.,Ltd located?: Hangzhou LEAD-IT Information & Technology Co.,Ltd is listed at F2 Builder B,Xidomen Road NO.22 Hangzhou Zhejiang CN 310012 in the IEEE OUI registry entry for A4:C2:AB. This is the address the organization registered with the IEEE, which may differ from its current operating address.