BQ (Mundo Reader S.L.)
Summary
- // what this is
- BQ is registered to MAC prefix
4C:74:03and 1 more in the IEEE OUI database. When a device's MAC address begins with4C:74:03, that block was registered by BQ — the OUI identifies the maker of the network hardware, which is not always the brand on the device. BQ has ceased operations, but the registration remains on record with IEEE. - // analyst note
- Both OUI blocks (4C:74:03 and B4:9D:0B) are BQ's own dedicated /24 assignments, not slices of a shared IEEE base, so a MAC address beginning with either reliably points to BQ-manufactured hardware such as an Aquaris-series phone or tablet or a Witbox 3D printer. BQ is defunct as of 2021, so any device seen with this prefix today is a legacy holdover rather than current production.
About this vendor.
A MAC address beginning 4C:74:03 or B4:9D:0B belongs to BQ, a Spanish consumer-electronics brand trading as Mundo Reader S.L., typically seen on Aquaris-series smartphones and tablets and other Wi-Fi-capable devices the company sold between roughly 2010 and its 2021 shutdown.
The IEEE OUI registry lists two independent MA-L (/24) assignments under the name "BQ," both registered to the same street address in Las Rozas de Madrid, Spain (the IEEE MA-L registry 4C7403, B49D0B). Two separate blocks registered to one company, rather than a single bare registration, is itself a signal of an operating vendor rather than a shell filer.
An independent source, Wikipedia, corroborates a real company headquartered in that same city: founded 2009, initially selling e-readers before expanding into the Aquaris smartphone and tablet line -- including the first Android One phone sold in Europe and early Ubuntu Touch devices (the Aquaris E4.5 and M10) -- plus Witbox 3D printers and educational robotics kits.
Vietnamese conglomerate Vingroup acquired a 51% stake in BQ in 2018; after Vingroup exited the smartphone business, BQ filed for bankruptcy and the company is defunct as of 2021. No CVE or vendor security advisory tying the BQ brand or Aquaris line to a specific vulnerability was found as of a September 2026 search.
- Device class
- Smartphones and tablets (Aquaris series), plus e-readers, Witbox 3D printers, and educational robotics kits (https://en.wikipedia.org/wiki/BQ_(company))
- Registry class
- MA-L (/24), two independent blocks (the IEEE MA-L registry 4C7403, B49D0B)
- Registered address
- Sofia 10, Las Rozas de Madrid, Madrid, ES 28230 (the IEEE MA-L registry 4C7403)
- Operating status
- Defunct -- bankruptcy filed 2021 after Vingroup's 2018 majority-stake acquisition and later exit (https://en.wikipedia.org/wiki/BQ_(company))
- Security history
- No CVE or vendor advisory found for the BQ brand as of a September 2026 search
- Organization
- BQ (trading name of Mundo Reader S.L.) [Confirmed] (the IEEE MA-L registry 4C7403, B49D0B)
- Registry class
- MA-L (IEEE MAC Address Block - Large, /24) [Confirmed] (the IEEE MA-L registry 4C7403)
- Assignment count
- 2 MA-L (/24) blocks under the same name and address; no MA-M or MA-S entries found [Confirmed] (the IEEE MA-L registry 4C7403, B49D0B)
- Registered address
- Sofia, 10, Las Rozas de Madrid, Madrid, ES 28230 [Confirmed] (the IEEE MA-L registry 4C7403)
- Company identity
- Spanish consumer-electronics maker founded 2009, headquartered in Las Rozas de Madrid; known for Aquaris smartphones/tablets, e-readers, Witbox 3D printers, and robotics kits [Likely] (https://en.wikipedia.org/wiki/BQ_(company))
- Operating status
- Defunct as of 2021, following Vingroup's 2018 acquisition of a 51% stake and later exit from the smartphone business [Likely] (https://en.wikipedia.org/wiki/BQ_(company))
- IEEE registration date
- Unknown -- IEEE publishes no registration date for MA-L assignments [Confirmed]
- Security history
- No CVE or vendor security advisory found tying the BQ brand or Aquaris line to a specific vulnerability, as of a September 2026 search [Unknown]