Which company owns MAC address prefix C4:4B:D1?

MAC address prefix C4:4B:D1 is registered to Wallys Communications Teachnologies Co.,Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C4:4B:D1 has a network interface built by Wallys Communications Teachnologies Co.,Ltd..

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in C4:4B:D1:00:00:00 that is C4:4B:D1 — 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 Wallys Communications Teachnologies Co.,Ltd. located?

Wallys Communications Teachnologies Co.,Ltd. is listed at 5-207, DongHong Pioneer Park, #99 YangYu Lane, SuZhou JiangSu CN 215000 in the IEEE OUI registry entry for C4:4B:D1. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Wallys Communications Teachnologies Co.,Ltd.

MAC address prefix C4:4B:D1 is registered to Wallys Communications Teachnologies Co.,Ltd. in the IEEE OUI registry. Any device whose MAC address begins with C4:4B:D1 has a network interface built by Wallys Communications Teachnologies 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 C4:4B:D1:00:00:00 to C4:4B:D1:FF:FF:FF.

OUI prefix: C4:4B:D1
Hyphen form: C4-4B-D1
MAC range: C4:4B:D1:00:00:00 – C4:4B:D1:FF:FF:FF
Addresses in block: 16,777,216
Organization: Wallys Communications Teachnologies Co.,Ltd.
Address: 5-207, DongHong Pioneer Park, #99 YangYu Lane, SuZhou JiangSu CN 215000
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 "Wallys Communications Teachnologies Co.,Ltd."
archived source →
2026-07-17Assigned to "Wallys Communications Teachnologies Co.,Ltd."

Nearby in the registry

The prefixes assigned immediately before and after C4:4B:D1:

FAQ

Which company owns MAC address prefix C4:4B:D1?: MAC address prefix C4:4B:D1 is registered to Wallys Communications Teachnologies Co.,Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C4:4B:D1 has a network interface built by Wallys Communications Teachnologies Co.,Ltd..
What is the OUI C4:4B:D1?: C4:4B:D1 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Wallys Communications Teachnologies Co.,Ltd.. It covers every address from C4:4B:D1:00:00:00 to C4:4B:D1:FF:FF:FF, or 16,777,216 addresses in total. It is also written C4-4B-D1.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in C4:4B:D1:00:00:00 that is C4:4B:D1 — 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 Wallys Communications Teachnologies Co.,Ltd. located?: Wallys Communications Teachnologies Co.,Ltd. is listed at 5-207, DongHong Pioneer Park, #99 YangYu Lane, SuZhou JiangSu CN 215000 in the IEEE OUI registry entry for C4:4B:D1. This is the address the organization registered with the IEEE, which may differ from its current operating address.