Which company owns MAC address prefix EC:97:B2?

MAC address prefix EC:97:B2 is registered to SUMEC Machinery & Electric Co.,Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with EC:97:B2 has a network interface built by SUMEC Machinery & Electric Co.,Ltd..

What is the OUI EC:97:B2?

EC:97:B2 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SUMEC Machinery & Electric Co.,Ltd.. It covers every address from EC:97:B2:00:00:00 to EC:97:B2:FF:FF:FF, or 16,777,216 addresses in total. It is also written EC-97-B2.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in EC:97:B2:00:00:00 that is EC:97:B2 — 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 SUMEC Machinery & Electric Co.,Ltd. located?

SUMEC Machinery & Electric Co.,Ltd. is listed at 198# ChangJiang Road, XuanWu District, 17F, SUMEC Building Nanjing JiangSu CN 210018 in the IEEE OUI registry entry for EC:97:B2. This is the address the organization registered with the IEEE, which may differ from its current operating address.

SUMEC Machinery & Electric Co.,Ltd.

MAC address prefix EC:97:B2 is registered to SUMEC Machinery & Electric Co.,Ltd. in the IEEE OUI registry. Any device whose MAC address begins with EC:97:B2 has a network interface built by SUMEC Machinery & Electric 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 EC:97:B2:00:00:00 to EC:97:B2:FF:FF:FF.

OUI prefix: EC:97:B2
Hyphen form: EC-97-B2
MAC range: EC:97:B2:00:00:00 – EC:97:B2:FF:FF:FF
Addresses in block: 16,777,216
Organization: SUMEC Machinery & Electric Co.,Ltd.
Address: 198# ChangJiang Road, XuanWu District, 17F, SUMEC Building Nanjing JiangSu CN 210018
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 "SUMEC Machinery & Electric Co.,Ltd."
archived source →
2026-07-17Assigned to "SUMEC Machinery & Electric Co.,Ltd."

Nearby in the registry

The prefixes assigned immediately before and after EC:97:B2:

FAQ

Which company owns MAC address prefix EC:97:B2?: MAC address prefix EC:97:B2 is registered to SUMEC Machinery & Electric Co.,Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with EC:97:B2 has a network interface built by SUMEC Machinery & Electric Co.,Ltd..
What is the OUI EC:97:B2?: EC:97:B2 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SUMEC Machinery & Electric Co.,Ltd.. It covers every address from EC:97:B2:00:00:00 to EC:97:B2:FF:FF:FF, or 16,777,216 addresses in total. It is also written EC-97-B2.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in EC:97:B2:00:00:00 that is EC:97:B2 — 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 SUMEC Machinery & Electric Co.,Ltd. located?: SUMEC Machinery & Electric Co.,Ltd. is listed at 198# ChangJiang Road, XuanWu District, 17F, SUMEC Building Nanjing JiangSu CN 210018 in the IEEE OUI registry entry for EC:97:B2. This is the address the organization registered with the IEEE, which may differ from its current operating address.