TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO
MAC address prefix F4:54:20 is registered to TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO in the IEEE OUI registry. Any device whose MAC address begins with F4:54:20 has a network interface built by TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO. 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 F4:54:20:00:00:00 to F4:54:20:FF:FF:FF.
- OUI prefix
- F4:54:20
- Hyphen form
- F4-54-20
- MAC range
- F4:54:20:00:00:00 – F4:54:20:FF:FF:FF
- Addresses in block
- 16,777,216
- Organization
- TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO
- Address
- Av. Buriti, 1900 – Setor B – Distrito Industrial Manaus Amazonas BR 69075-000
- 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 TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO
TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO holds 9 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.
- 2020-03-21Assigned to "TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO"archived source →
- 2026-07-17Assigned to "TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO"
Nearby in the registry
The prefixes assigned immediately before and after F4:54:20:
- Telechips IncF4:50:EB
- Mellanox Technologies, Inc.F4:52:14
- ASKEY COMPUTER CORPF4:52:46
- Antare Technology LtdF4:52:5B
- Apple, Inc.F4:52:93
- HUAWEI TECHNOLOGIES CO.,LTDF4:53:E4
- Extreme Networks, Inc.F4:54:24
- Rockwell AutomationF4:54:33
- HENGBAO Corporation LTD.F4:55:95
- HUAWEI TECHNOLOGIES CO.,LTDF4:55:9C
- Niceway CNC Technology Co.,Ltd.Hunan ProvinceF4:55:E0
- Fiberhome Telecommunication Technologies Co.,LTDF4:57:3E
FAQ
- Which company owns MAC address prefix F4:54:20?
- MAC address prefix F4:54:20 is registered to TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with F4:54:20 has a network interface built by TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO.
- What is the OUI F4:54:20?
- F4:54:20 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO. It covers every address from F4:54:20:00:00:00 to F4:54:20:FF:FF:FF, or 16,777,216 addresses in total. It is also written F4-54-20.
- How do I find the manufacturer of a MAC address?
- Take the first three octets of the address — in F4:54:20:00:00:00 that is F4:54:20 — 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 TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO located?
- TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO is listed at Av. Buriti, 1900 – Setor B – Distrito Industrial Manaus Amazonas BR 69075-000 in the IEEE OUI registry entry for F4:54:20. This is the address the organization registered with the IEEE, which may differ from its current operating address.
- How many MAC prefixes does TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO own?
- TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO holds 9 OUI prefixes in the IEEE registry, of which F4:54:20 is one. A device made by TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO could carry a MAC address from any of them.