Which company owns MAC address prefix D4:0E:60?

MAC address prefix D4:0E:60 is registered to Nanjing phx-gctech Information Technology Co., Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D4:0E:60 has a network interface built by Nanjing phx-gctech Information Technology Co., Ltd.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in D4:0E:60:00:00:00 that is D4:0E:60 — 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.

Nanjing phx-gctech Information Technology Co., Ltd

MAC address prefix D4:0E:60 is registered to Nanjing phx-gctech Information Technology Co., Ltd in the IEEE OUI registry. Any device whose MAC address begins with D4:0E:60 has a network interface built by Nanjing phx-gctech 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 D4:0E:60:00:00:00 to D4:0E:60:FF:FF:FF.

OUI prefix: D4:0E:60
Hyphen form: D4-0E-60
MAC range: D4:0E:60:00:00:00 – D4:0E:60:FF:FF:FF
Addresses in block: 16,777,216
Organization: Nanjing phx-gctech Information Technology Co., Ltd
Address: Building 6, No. 1009, Tianyuan East Road, Jiangning District, Nanjing NanJing JiangSu CN 21000
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.

2024-09-17Assigned to "Nanjing phx-gctech Information Technology Co., Ltd"
archived source →
2026-07-17Assigned to "Nanjing phx-gctech Information Technology Co., Ltd"

Nearby in the registry

The prefixes assigned immediately before and after D4:0E:60:

FAQ

Which company owns MAC address prefix D4:0E:60?: MAC address prefix D4:0E:60 is registered to Nanjing phx-gctech Information Technology Co., Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D4:0E:60 has a network interface built by Nanjing phx-gctech Information Technology Co., Ltd.
What is the OUI D4:0E:60?: D4:0E:60 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Nanjing phx-gctech Information Technology Co., Ltd. It covers every address from D4:0E:60:00:00:00 to D4:0E:60:FF:FF:FF, or 16,777,216 addresses in total. It is also written D4-0E-60.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in D4:0E:60:00:00:00 that is D4:0E:60 — 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 Nanjing phx-gctech Information Technology Co., Ltd located?: Nanjing phx-gctech Information Technology Co., Ltd is listed at Building 6, No. 1009, Tianyuan East Road, Jiangning District, Nanjing NanJing JiangSu CN 21000 in the IEEE OUI registry entry for D4:0E:60. This is the address the organization registered with the IEEE, which may differ from its current operating address.