Shenzhen HongRui Optical Technology Co., Ltd.
MAC address prefix 1C:2A:A3 is registered to Shenzhen HongRui Optical Technology Co., Ltd. in the IEEE OUI registry. Any device whose MAC address begins with 1C:2A:A3 has a network interface built by Shenzhen HongRui Optical 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 1C:2A:A3:00:00:00 to 1C:2A:A3:FF:FF:FF.
- OUI prefix
- 1C:2A:A3
- Hyphen form
- 1C-2A-A3
- MAC range
- 1C:2A:A3:00:00:00 – 1C:2A:A3:FF:FF:FF
- Addresses in block
- 16,777,216
- Organization
- Shenzhen HongRui Optical Technology Co., Ltd.
- Address
- B#2F Shuangjinhui Industrial Park, Yonghe Road, Heping Village, Fuyong Town, Bao'an Dis Shenzhen Guangdong CN 518000
- 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.
- 2020-03-21Assigned to "Shenzhen HongRui Optical Technology Co., Ltd."archived source →
- 2026-07-17Assigned to "Shenzhen HongRui Optical Technology Co., Ltd."
Nearby in the registry
The prefixes assigned immediately before and after 1C:2A:A3:
- China Mobile IOT Company Limited1C:25:E1
- zte corporation1C:27:04
- Datang Gohighsec(zhejiang)Information Technology Co.,Ltd.1C:27:DD
- Hewlett Packard Enterprise1C:28:AF
- Espressif Inc.1C:29:04
- Nokia1C:2A:8B
- Beijing Xiaomi Electronics Co.,Ltd1C:2A:B0
- Shanghai Mountain View Silicon1C:2C:E0
- Extreme Networks, Inc.1C:2D:60
- Suzhou Tremenet Communication Technology Co., Ltd.1C:2E:1B
- Guangzhou Shiyuan Electronic Technology Company Limited1C:2F:A2
- Hewlett Packard Enterprise1C:30:03
FAQ
- Which company owns MAC address prefix 1C:2A:A3?
- MAC address prefix 1C:2A:A3 is registered to Shenzhen HongRui Optical Technology Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 1C:2A:A3 has a network interface built by Shenzhen HongRui Optical Technology Co., Ltd..
- What is the OUI 1C:2A:A3?
- 1C:2A:A3 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Shenzhen HongRui Optical Technology Co., Ltd.. It covers every address from 1C:2A:A3:00:00:00 to 1C:2A:A3:FF:FF:FF, or 16,777,216 addresses in total. It is also written 1C-2A-A3.
- How do I find the manufacturer of a MAC address?
- Take the first three octets of the address — in 1C:2A:A3:00:00:00 that is 1C:2A:A3 — 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 Shenzhen HongRui Optical Technology Co., Ltd. located?
- Shenzhen HongRui Optical Technology Co., Ltd. is listed at B#2F Shuangjinhui Industrial Park, Yonghe Road, Heping Village, Fuyong Town, Bao'an Dis Shenzhen Guangdong CN 518000 in the IEEE OUI registry entry for 1C:2A:A3. This is the address the organization registered with the IEEE, which may differ from its current operating address.