TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO
MAC address prefix 10:41:21 is registered to TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO in the IEEE OUI registry. Any device whose MAC address begins with 10:41:21 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 10:41:21:00:00:00 to 10:41:21:FF:FF:FF.
- OUI prefix
- 10:41:21
- Hyphen form
- 10-41-21
- MAC range
- 10:41:21:00:00:00 – 10:41:21: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 (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 "TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO"
Nearby in the registry
The prefixes assigned immediately before and after 10:41:21:
- Intel Corporate10:3D:1C
- China Mobile Group Device Co.,Ltd.10:3D:3E
- HFC Technology (Beijing) Ltd. Co.10:3D:EA
- Xiaomi Communications Co Ltd10:3F:44
- New H3C Technologies Co., Ltd10:3F:8C
- Apple, Inc.10:40:F3
- Apple, Inc.10:41:7F
- Apple, Inc.10:42:10
- Soundmax Electronic Limited10:43:69
- HUAWEI TECHNOLOGIES CO.,LTD10:44:00
- Shaanxi Hitech Electronic Co., LTD10:44:5A
- Norphonic AS10:45:BE
FAQ
- Which company owns MAC address prefix 10:41:21?
- MAC address prefix 10:41:21 is registered to TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 10:41:21 has a network interface built by TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO.
- What is the OUI 10:41:21?
- 10:41:21 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 10:41:21:00:00:00 to 10:41:21:FF:FF:FF, or 16,777,216 addresses in total. It is also written 10-41-21.
- How do I find the manufacturer of a MAC address?
- Take the first three octets of the address — in 10:41:21:00:00:00 that is 10:41:21 — 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 10:41:21. 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 10:41:21 is one. A device made by TELLESCOM INDUSTRIA E COMERCIO EM TELECOMUNICACAO could carry a MAC address from any of them.