Guangzhou Ronsuo Electronic Technology Co.,Ltd
MAC address prefix 9C:D1:D0 is registered to Guangzhou Ronsuo Electronic Technology Co.,Ltd in the IEEE OUI registry. Any device whose MAC address begins with 9C:D1:D0 has a network interface built by Guangzhou Ronsuo Electronic 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 9C:D1:D0:00:00:00 to 9C:D1:D0:FF:FF:FF.
- OUI prefix
- 9C:D1:D0
- Hyphen form
- 9C-D1-D0
- MAC range
- 9C:D1:D0:00:00:00 – 9C:D1:D0:FF:FF:FF
- Addresses in block
- 16,777,216
- Organization
- Guangzhou Ronsuo Electronic Technology Co.,Ltd
- Address
- Address:Unit 503-505, 507, Area E, No. 80 Lanyue Road, Science Avenue, Huangpu District, Guangzhou Guangzhou Guangdong CN 510600
- 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 "Guangzhou Ronsuo Electronic Technology Co.,Ltd"archived source →
- 2026-07-17Assigned to "Guangzhou Ronsuo Electronic Technology Co.,Ltd"
Nearby in the registry
The prefixes assigned immediately before and after 9C:D1:D0:
- Espressif Inc.9C:CC:01
- Juniper Networks9C:CC:83
- Dongguan Liesheng Electronic Co., Ltd.9C:CD:42
- CHENG UEI PRECISION INDUSTRY CO.,LTD9C:CD:82
- PROMED Soest GmbH9C:CE:22
- Ruijie Networks Co.,LTD9C:CE:88
- Hon Hai Precision Ind. Co.,Ltd.9C:D2:1E
- zte corporation9C:D2:4B
- PLC Technology Ltd9C:D3:32
- Samsung Electronics Co.,Ltd9C:D3:5B
- NETGEAR9C:D3:6D
- Innolux Technology Europe BV9C:D4:8B
FAQ
- Which company owns MAC address prefix 9C:D1:D0?
- MAC address prefix 9C:D1:D0 is registered to Guangzhou Ronsuo Electronic Technology Co.,Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 9C:D1:D0 has a network interface built by Guangzhou Ronsuo Electronic Technology Co.,Ltd.
- What is the OUI 9C:D1:D0?
- 9C:D1:D0 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Guangzhou Ronsuo Electronic Technology Co.,Ltd. It covers every address from 9C:D1:D0:00:00:00 to 9C:D1:D0:FF:FF:FF, or 16,777,216 addresses in total. It is also written 9C-D1-D0.
- How do I find the manufacturer of a MAC address?
- Take the first three octets of the address — in 9C:D1:D0:00:00:00 that is 9C:D1:D0 — 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 Guangzhou Ronsuo Electronic Technology Co.,Ltd located?
- Guangzhou Ronsuo Electronic Technology Co.,Ltd is listed at Address:Unit 503-505, 507, Area E, No. 80 Lanyue Road, Science Avenue, Huangpu District, Guangzhou Guangzhou Guangdong CN 510600 in the IEEE OUI registry entry for 9C:D1:D0. This is the address the organization registered with the IEEE, which may differ from its current operating address.