Which company owns MAC address prefix 70:5E:55?

MAC address prefix 70:5E:55 is registered to Realme Chongqing MobileTelecommunications Corp Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 70:5E:55 has a network interface built by Realme Chongqing MobileTelecommunications Corp Ltd.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 70:5E:55:00:00:00 that is 70:5E:55 — 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.

How many MAC prefixes does Realme Chongqing MobileTelecommunications Corp Ltd own?

Realme Chongqing MobileTelecommunications Corp Ltd holds 6 OUI prefixes in the IEEE registry, of which 70:5E:55 is one. A device made by Realme Chongqing MobileTelecommunications Corp Ltd could carry a MAC address from any of them.

Realme Chongqing MobileTelecommunications Corp Ltd

MAC address prefix 70:5E:55 is registered to Realme Chongqing MobileTelecommunications Corp Ltd in the IEEE OUI registry. Any device whose MAC address begins with 70:5E:55 has a network interface built by Realme Chongqing MobileTelecommunications Corp 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 70:5E:55:00:00:00 to 70:5E:55:FF:FF:FF.

OUI prefix: 70:5E:55
Hyphen form: 70-5E-55
MAC range: 70:5E:55:00:00:00 – 70:5E:55:FF:FF:FF
Addresses in block: 16,777,216
Organization: Realme Chongqing MobileTelecommunications Corp Ltd
Address: No.24 Nichang Boulevard, Huixing Block, Yubei District, Chongqing. Chongqing China CN 401120
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 Realme Chongqing MobileTelecommunications Corp Ltd

Realme Chongqing MobileTelecommunications Corp Ltd holds 6 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.

2018-12-21Assigned to "Realme Chongqing MobileTelecommunications Corp Ltd"
archived source →
2026-07-17Assigned to "Realme Chongqing MobileTelecommunications Corp Ltd"

Nearby in the registry

The prefixes assigned immediately before and after 70:5E:55:

FAQ

Which company owns MAC address prefix 70:5E:55?: MAC address prefix 70:5E:55 is registered to Realme Chongqing MobileTelecommunications Corp Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 70:5E:55 has a network interface built by Realme Chongqing MobileTelecommunications Corp Ltd.
What is the OUI 70:5E:55?: 70:5E:55 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Realme Chongqing MobileTelecommunications Corp Ltd. It covers every address from 70:5E:55:00:00:00 to 70:5E:55:FF:FF:FF, or 16,777,216 addresses in total. It is also written 70-5E-55.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 70:5E:55:00:00:00 that is 70:5E:55 — 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 Realme Chongqing MobileTelecommunications Corp Ltd located?: Realme Chongqing MobileTelecommunications Corp Ltd is listed at No.24 Nichang Boulevard, Huixing Block, Yubei District, Chongqing. Chongqing China CN 401120 in the IEEE OUI registry entry for 70:5E:55. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does Realme Chongqing MobileTelecommunications Corp Ltd own?: Realme Chongqing MobileTelecommunications Corp Ltd holds 6 OUI prefixes in the IEEE registry, of which 70:5E:55 is one. A device made by Realme Chongqing MobileTelecommunications Corp Ltd could carry a MAC address from any of them.