Which company owns MAC address prefix 88:AF:7B?

MAC address prefix 88:AF:7B is registered to Nanjing Powercore Tech Co.,Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 88:AF:7B has a network interface built by Nanjing Powercore Tech Co.,Ltd.

What is the OUI 88:AF:7B?

88:AF:7B is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Nanjing Powercore Tech Co.,Ltd. It covers every address from 88:AF:7B:00:00:00 to 88:AF:7B:FF:FF:FF, or 16,777,216 addresses in total. It is also written 88-AF-7B.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 88:AF:7B:00:00:00 that is 88:AF:7B — 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 Powercore Tech Co.,Ltd located?

Nanjing Powercore Tech Co.,Ltd is listed at Room 104-9, Block B, Animation Building, 11 Xinghuo Road, Jiangbei New Area, Nanjing Nanjing CN 210000 in the IEEE OUI registry entry for 88:AF:7B. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Nanjing Powercore Tech Co.,Ltd

MAC address prefix 88:AF:7B is registered to Nanjing Powercore Tech Co.,Ltd in the IEEE OUI registry. Any device whose MAC address begins with 88:AF:7B has a network interface built by Nanjing Powercore Tech 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 88:AF:7B:00:00:00 to 88:AF:7B:FF:FF:FF.

OUI prefix: 88:AF:7B
Hyphen form: 88-AF-7B
MAC range: 88:AF:7B:00:00:00 – 88:AF:7B:FF:FF:FF
Addresses in block: 16,777,216
Organization: Nanjing Powercore Tech Co.,Ltd
Address: Room 104-9, Block B, Animation Building, 11 Xinghuo Road, Jiangbei New Area, Nanjing Nanjing CN 210000
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.

2023-07-11Assigned to "Nanjing Powercore Tech Co.,Ltd"
archived source →
2026-07-17Assigned to "Nanjing Powercore Tech Co.,Ltd"

Nearby in the registry

The prefixes assigned immediately before and after 88:AF:7B:

FAQ

Which company owns MAC address prefix 88:AF:7B?: MAC address prefix 88:AF:7B is registered to Nanjing Powercore Tech Co.,Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 88:AF:7B has a network interface built by Nanjing Powercore Tech Co.,Ltd.
What is the OUI 88:AF:7B?: 88:AF:7B is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Nanjing Powercore Tech Co.,Ltd. It covers every address from 88:AF:7B:00:00:00 to 88:AF:7B:FF:FF:FF, or 16,777,216 addresses in total. It is also written 88-AF-7B.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 88:AF:7B:00:00:00 that is 88:AF:7B — 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 Powercore Tech Co.,Ltd located?: Nanjing Powercore Tech Co.,Ltd is listed at Room 104-9, Block B, Animation Building, 11 Xinghuo Road, Jiangbei New Area, Nanjing Nanjing CN 210000 in the IEEE OUI registry entry for 88:AF:7B. This is the address the organization registered with the IEEE, which may differ from its current operating address.