Which company owns MAC address prefix 78:B3:B9?

MAC address prefix 78:B3:B9 is registered to ShangHai sunup lighting CO.,LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 78:B3:B9 has a network interface built by ShangHai sunup lighting CO.,LTD.

What is the OUI 78:B3:B9?

78:B3:B9 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ShangHai sunup lighting CO.,LTD. It covers every address from 78:B3:B9:00:00:00 to 78:B3:B9:FF:FF:FF, or 16,777,216 addresses in total. It is also written 78-B3-B9.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 78:B3:B9:00:00:00 that is 78:B3:B9 — 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 ShangHai sunup lighting CO.,LTD located?

ShangHai sunup lighting CO.,LTD is listed at RM2508,Building 2,1077# Zu Chong Zhi Rd,Zhang Jiang Hi-Tech Park,Pudong New Area,ShangHai,China shanghai shanghai CN 201203 in the IEEE OUI registry entry for 78:B3:B9. This is the address the organization registered with the IEEE, which may differ from its current operating address.

ShangHai sunup lighting CO.,LTD

MAC address prefix 78:B3:B9 is registered to ShangHai sunup lighting CO.,LTD in the IEEE OUI registry. Any device whose MAC address begins with 78:B3:B9 has a network interface built by ShangHai sunup lighting 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 78:B3:B9:00:00:00 to 78:B3:B9:FF:FF:FF.

OUI prefix: 78:B3:B9
Hyphen form: 78-B3-B9
MAC range: 78:B3:B9:00:00:00 – 78:B3:B9:FF:FF:FF
Addresses in block: 16,777,216
Organization: ShangHai sunup lighting CO.,LTD
Address: RM2508,Building 2,1077# Zu Chong Zhi Rd,Zhang Jiang Hi-Tech Park,Pudong New Area,ShangHai,China shanghai shanghai CN 201203
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 "ShangHai sunup lighting CO.,LTD"
archived source →
2026-07-17Assigned to "ShangHai sunup lighting CO.,LTD"

Nearby in the registry

The prefixes assigned immediately before and after 78:B3:B9:

FAQ

Which company owns MAC address prefix 78:B3:B9?: MAC address prefix 78:B3:B9 is registered to ShangHai sunup lighting CO.,LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 78:B3:B9 has a network interface built by ShangHai sunup lighting CO.,LTD.
What is the OUI 78:B3:B9?: 78:B3:B9 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ShangHai sunup lighting CO.,LTD. It covers every address from 78:B3:B9:00:00:00 to 78:B3:B9:FF:FF:FF, or 16,777,216 addresses in total. It is also written 78-B3-B9.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 78:B3:B9:00:00:00 that is 78:B3:B9 — 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 ShangHai sunup lighting CO.,LTD located?: ShangHai sunup lighting CO.,LTD is listed at RM2508,Building 2,1077# Zu Chong Zhi Rd,Zhang Jiang Hi-Tech Park,Pudong New Area,ShangHai,China shanghai shanghai CN 201203 in the IEEE OUI registry entry for 78:B3:B9. This is the address the organization registered with the IEEE, which may differ from its current operating address.