Which company owns MAC address prefix 20:DE:88?

MAC address prefix 20:DE:88 is registered to IC Realtime LLC in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 20:DE:88 has a network interface built by IC Realtime LLC.

What is the OUI 20:DE:88?

20:DE:88 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to IC Realtime LLC. It covers every address from 20:DE:88:00:00:00 to 20:DE:88:FF:FF:FF, or 16,777,216 addresses in total. It is also written 20-DE-88.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 20:DE:88:00:00:00 that is 20:DE:88 — 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 IC Realtime LLC located?

IC Realtime LLC is listed at 3050 N Andrews Ave Ext. Pompano Beach FL US 33064 in the IEEE OUI registry entry for 20:DE:88. This is the address the organization registered with the IEEE, which may differ from its current operating address.

IC Realtime LLC

MAC address prefix 20:DE:88 is registered to IC Realtime LLC in the IEEE OUI registry. Any device whose MAC address begins with 20:DE:88 has a network interface built by IC Realtime LLC. 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 20:DE:88:00:00:00 to 20:DE:88:FF:FF:FF.

OUI prefix: 20:DE:88
Hyphen form: 20-DE-88
MAC range: 20:DE:88:00:00:00 – 20:DE:88:FF:FF:FF
Addresses in block: 16,777,216
Organization: IC Realtime LLC
Address: 3050 N Andrews Ave Ext. Pompano Beach FL US 33064
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.

2018-12-21Assigned to "IC Realtime LLC"
archived source →
2026-07-17Assigned to "IC Realtime LLC"

Nearby in the registry

The prefixes assigned immediately before and after 20:DE:88:

FAQ

Which company owns MAC address prefix 20:DE:88?: MAC address prefix 20:DE:88 is registered to IC Realtime LLC in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 20:DE:88 has a network interface built by IC Realtime LLC.
What is the OUI 20:DE:88?: 20:DE:88 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to IC Realtime LLC. It covers every address from 20:DE:88:00:00:00 to 20:DE:88:FF:FF:FF, or 16,777,216 addresses in total. It is also written 20-DE-88.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 20:DE:88:00:00:00 that is 20:DE:88 — 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 IC Realtime LLC located?: IC Realtime LLC is listed at 3050 N Andrews Ave Ext. Pompano Beach FL US 33064 in the IEEE OUI registry entry for 20:DE:88. This is the address the organization registered with the IEEE, which may differ from its current operating address.