TONGQING COMMUNICATION EQUIPMENT (SHENZHEN) Co.,Ltd
MAC address prefix 80:81:A5 is registered to TONGQING COMMUNICATION EQUIPMENT (SHENZHEN) Co.,Ltd in the IEEE OUI registry. Any device whose MAC address begins with 80:81:A5 has a network interface built by TONGQING COMMUNICATION EQUIPMENT (SHENZHEN) 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 80:81:A5:00:00:00 to 80:81:A5:FF:FF:FF.
- OUI prefix
- 80:81:A5
- Hyphen form
- 80-81-A5
- MAC range
- 80:81:A5:00:00:00 – 80:81:A5:FF:FF:FF
- Addresses in block
- 16,777,216
- Organization
- TONGQING COMMUNICATION EQUIPMENT (SHENZHEN) Co.,Ltd
- Address
- Tongqing Industry Park,jiuwei,xixiang Town,Baoan District, Shenzhen Guangdong CN 518126
- 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 "TONGQING COMMUNICATION EQUIPMENT (SHENZHEN) Co.,Ltd"archived source →
- 2026-07-17Assigned to "TONGQING COMMUNICATION EQUIPMENT (SHENZHEN) Co.,Ltd"
Nearby in the registry
The prefixes assigned immediately before and after 80:81:A5:
- Espressif Inc.80:7D:3A
- Chongqing Sichuan Instrument Microcircuit Co.LTD.80:7D:E3
- Mellanox Technologies, Inc.80:7D:F9
- Shenzhen SuperElectron Technology Co.,Ltd.80:7E:B4
- Juniper Networks80:7F:F8
- Fortinet, Inc.80:80:2C
- Apple, Inc.80:82:23
- ATCOM Technology Co.Ltd.80:82:87
- STMicrolectronics International NV80:82:F5
- Arcadyan Corporation80:82:FE
- Apple, Inc.80:83:F6
- Intel Corporate80:84:89
FAQ
- Which company owns MAC address prefix 80:81:A5?
- MAC address prefix 80:81:A5 is registered to TONGQING COMMUNICATION EQUIPMENT (SHENZHEN) Co.,Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 80:81:A5 has a network interface built by TONGQING COMMUNICATION EQUIPMENT (SHENZHEN) Co.,Ltd.
- What is the OUI 80:81:A5?
- 80:81:A5 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to TONGQING COMMUNICATION EQUIPMENT (SHENZHEN) Co.,Ltd. It covers every address from 80:81:A5:00:00:00 to 80:81:A5:FF:FF:FF, or 16,777,216 addresses in total. It is also written 80-81-A5.
- How do I find the manufacturer of a MAC address?
- Take the first three octets of the address — in 80:81:A5:00:00:00 that is 80:81:A5 — 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 TONGQING COMMUNICATION EQUIPMENT (SHENZHEN) Co.,Ltd located?
- TONGQING COMMUNICATION EQUIPMENT (SHENZHEN) Co.,Ltd is listed at Tongqing Industry Park,jiuwei,xixiang Town,Baoan District, Shenzhen Guangdong CN 518126 in the IEEE OUI registry entry for 80:81:A5. This is the address the organization registered with the IEEE, which may differ from its current operating address.