SHANGHAI XIANGCHENG COMMUNICATION TECHNOLOGY CO., LTD
MAC address prefix DC:81:3D is registered to SHANGHAI XIANGCHENG COMMUNICATION TECHNOLOGY CO., LTD in the IEEE OUI registry. Any device whose MAC address begins with DC:81:3D has a network interface built by SHANGHAI XIANGCHENG COMMUNICATION 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 DC:81:3D:00:00:00 to DC:81:3D:FF:FF:FF.
- OUI prefix
- DC:81:3D
- Hyphen form
- DC-81-3D
- MAC range
- DC:81:3D:00:00:00 – DC:81:3D:FF:FF:FF
- Addresses in block
- 16,777,216
- Organization
- SHANGHAI XIANGCHENG COMMUNICATION TECHNOLOGY CO., LTD
- Address
- Room 211-5, Building 1, No. 290 Wankang Road, Minhang District Shanghai Shanghai CN 201100
- 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.
Other prefixes from SHANGHAI XIANGCHENG COMMUNICATION TECHNOLOGY CO., LTD
SHANGHAI XIANGCHENG COMMUNICATION TECHNOLOGY CO., LTD holds 2 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:
Assignment history (2)
The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.
- 2025-05-13Assigned to "SHANGHAI XIANGCHENG COMMUNICATION TECHNOLOGY CO., LTD"archived source →
- 2026-07-17Assigned to "SHANGHAI XIANGCHENG COMMUNICATION TECHNOLOGY CO., LTD"
Nearby in the registry
The prefixes assigned immediately before and after DC:81:3D:
- Cisco Systems, IncDC:7B:94
- China Mobile Group Device Co.,Ltd.DC:7C:F7
- HUAWEI TECHNOLOGIES CO.,LTDDC:7E:1D
- HUAWEI TECHNOLOGIES CO.,LTDDC:7E:F5
- 2Wire IncDC:7F:A4
- Apple, Inc.DC:80:84
- JANUS, spol. s r.o.DC:82:5B
- iPortDC:82:F6
- Seiko Epson CorporationDC:83:BF
- shenzhen trolink Technology Co.,LtdDC:84:03
- Shenzhen Qihoo Intelligent Technology Co.,LtdDC:84:E9
- AzureWave Technology Inc.DC:85:DE
FAQ
- Which company owns MAC address prefix DC:81:3D?
- MAC address prefix DC:81:3D is registered to SHANGHAI XIANGCHENG COMMUNICATION TECHNOLOGY CO., LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with DC:81:3D has a network interface built by SHANGHAI XIANGCHENG COMMUNICATION TECHNOLOGY CO., LTD.
- What is the OUI DC:81:3D?
- DC:81:3D is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SHANGHAI XIANGCHENG COMMUNICATION TECHNOLOGY CO., LTD. It covers every address from DC:81:3D:00:00:00 to DC:81:3D:FF:FF:FF, or 16,777,216 addresses in total. It is also written DC-81-3D.
- How do I find the manufacturer of a MAC address?
- Take the first three octets of the address — in DC:81:3D:00:00:00 that is DC:81:3D — 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 XIANGCHENG COMMUNICATION TECHNOLOGY CO., LTD located?
- SHANGHAI XIANGCHENG COMMUNICATION TECHNOLOGY CO., LTD is listed at Room 211-5, Building 1, No. 290 Wankang Road, Minhang District Shanghai Shanghai CN 201100 in the IEEE OUI registry entry for DC:81:3D. This is the address the organization registered with the IEEE, which may differ from its current operating address.
- How many MAC prefixes does SHANGHAI XIANGCHENG COMMUNICATION TECHNOLOGY CO., LTD own?
- SHANGHAI XIANGCHENG COMMUNICATION TECHNOLOGY CO., LTD holds 2 OUI prefixes in the IEEE registry, of which DC:81:3D is one. A device made by SHANGHAI XIANGCHENG COMMUNICATION TECHNOLOGY CO., LTD could carry a MAC address from any of them.