Siemens Industrial Automation Products Ltd., Chengdu
MAC address prefix E0:DC:A0 is registered to Siemens Industrial Automation Products Ltd., Chengdu in the IEEE OUI registry. Any device whose MAC address begins with E0:DC:A0 has a network interface built by Siemens Industrial Automation Products Ltd., Chengdu. 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 E0:DC:A0:00:00:00 to E0:DC:A0:FF:FF:FF.
- OUI prefix
- E0:DC:A0
- Hyphen form
- E0-DC-A0
- MAC range
- E0:DC:A0:00:00:00 – E0:DC:A0:FF:FF:FF
- Addresses in block
- 16,777,216
- Organization
- Siemens Industrial Automation Products Ltd., Chengdu
- Address
- Tianyuan Road 99 Cheng Du Si Chuan CN 611731
- 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 Siemens Industrial Automation Products Ltd., Chengdu
Siemens Industrial Automation Products Ltd., Chengdu holds 5 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:
Assignment history (1)
The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.
- 2026-07-17Assigned to "Siemens Industrial Automation Products Ltd., Chengdu"
Nearby in the registry
The prefixes assigned immediately before and after E0:DC:A0:
- zte corporationE0:DA:D7
- JVC KENWOOD CorporationE0:DA:DC
- Samsung Electronics Co.,LtdE0:DB:10
- Dell Inc.E0:DB:55
- Open Standard Digital-IF Interface for SATCOM SystemsE0:DB:88
- Vantiva USA LLCE0:DB:D1
- Xiaomi Communications Co LtdE0:DC:FF
- vivo Mobile Communication Co., Ltd.E0:DD:C0
- Texas InstrumentsE0:DE:F2
- Hangzhou Hikvision Digital Technology Co.,Ltd.E0:DF:13
- Zeica Labs Pte LtdE0:DF:B7
- China Mobile Group Device Co.,Ltd.E0:E0:C2
FAQ
- Which company owns MAC address prefix E0:DC:A0?
- MAC address prefix E0:DC:A0 is registered to Siemens Industrial Automation Products Ltd., Chengdu in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E0:DC:A0 has a network interface built by Siemens Industrial Automation Products Ltd., Chengdu.
- What is the OUI E0:DC:A0?
- E0:DC:A0 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Siemens Industrial Automation Products Ltd., Chengdu. It covers every address from E0:DC:A0:00:00:00 to E0:DC:A0:FF:FF:FF, or 16,777,216 addresses in total. It is also written E0-DC-A0.
- How do I find the manufacturer of a MAC address?
- Take the first three octets of the address — in E0:DC:A0:00:00:00 that is E0:DC:A0 — 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 Siemens Industrial Automation Products Ltd., Chengdu located?
- Siemens Industrial Automation Products Ltd., Chengdu is listed at Tianyuan Road 99 Cheng Du Si Chuan CN 611731 in the IEEE OUI registry entry for E0:DC:A0. This is the address the organization registered with the IEEE, which may differ from its current operating address.
- How many MAC prefixes does Siemens Industrial Automation Products Ltd., Chengdu own?
- Siemens Industrial Automation Products Ltd., Chengdu holds 5 OUI prefixes in the IEEE registry, of which E0:DC:A0 is one. A device made by Siemens Industrial Automation Products Ltd., Chengdu could carry a MAC address from any of them.