MAC address vendor

Gertec Brasil Ltda — 2 prefixes (MA-L)

Primary prefix
78:57:B0
Block
MA-L
Status
Active

Summary

// what this is
Gertec Brasil LTDA is registered to MAC prefix 78:57:B0 and 1 more in the IEEE OUI database. When a device's MAC address begins with 78:57:B0, that block was registered by Gertec Brasil LTDA — the OUI identifies the maker of the network hardware, which is not always the brand on the device.
// analyst note
A Gertec OUI on a globally-administered address = genuine Gertec hardware, most plausibly a POS/payment terminal or peripheral. Two MA-L blocks plus an identifiable operating company confirm substance beyond a bare IEEE registration.
[ 01 ] — Context

About this vendor.

Updated  ·  Confidence: Medium

Gertec Brasil Ltda is a São Paulo–based Brazilian manufacturer of commercial and banking-automation hardware, holding two IEEE MA-L blocks — 78:57:B0 and C8:36:A3 — both registered to the same address (Avenida Jabaquara, 3060, room 601, São Paulo, SP, BR 04046500). Holding two separate 24-bit allocations under one registrant is itself a marker of an active, ongoing manufacturer requesting additional address space over time rather than a one-off shell filing. Gertec's product line centers on payment terminals (fixed and portable/Android POS devices), barcode readers, and printers, alongside device-management and remote-monitoring services for the financial and retail sectors. The company reports over 6 million payment terminals sold historically and operates the GER7 transaction-capture subsidiary; in May 2025 a Gertec-group company announced the acquisition of MOBBUY. For OUI classification, either prefix on a globally-administered address reliably points to genuine Gertec hardware — most plausibly a POS/payment terminal or peripheral — though the company's product and scale claims are drawn from its own site and Brazilian trade press and should be read as vendor-stated rather than independently audited. No CVEs or device-specific security advisories for Gertec hardware were located in this pass; that absence is "no findings," not a clean bill of health.

IEEE assignment
2 prefixes → GERTEC BRASIL LTDA, registered São Paulo, SP, BR [Confirmed] — IEEE MA-L (cached the IEEE MA-L registry snapshot)
Registry / block size
MA-L (24-bit OUI); holds 2 IEEE prefixes [Confirmed] — the IEEE MA-L registry. No MA-M or MA-S blocks found in the IEEE MA-M registry / the IEEE MA-S registry. NOTE: IEEE's public OUI data publishes NO assignment/registration date; any "date registered" on third-party tools is a database artifact, not an IEEE fact.
Verified prefixes (both MA-L, GERTEC BRASIL LTDA)
78:57:B0, C8:36:A3 [Confirmed] — the IEEE MA-L registry
HQ / country
Avenida Jabaquara, 3060, room 601, São Paulo, SP, BR 04046500 [Confirmed] — IEEE MA-L (registry address, identical on both blocks)
Company status
active [Likely] — gertec.com.br (vendor site; corroborated by 2025 trade-press coverage)
Device types
payment terminals / POS (fixed and portable/Android), barcode readers, printers [Likely] — gertec.com.br, loja.gertec.com.br (vendor-stated)
Notable products
POS/payment terminals; GER7 transaction-capture platform (subsidiary) [Likely] — gertec.com.br, tiinside.com.br
Company scale
reports 6M+ payment terminals sold historically; ~12,000 terminals under subscription model as of Oct 2022 [Likely] — mobiletime.com.br, gertec.com.br (vendor-stated figures, not independently audited)
Corporate activity
Gertec-group company announced acquisition of MOBBUY, May 2025 [Likely] — tiinside.com.br
Registration date
Unknown — IEEE publishes no OUI assignment dates; no date field exists in the registry files [Confirmed] — the IEEE MA-L registry
Security context
no CVEs or device-specific advisories located in this pass [Unknown] — absence of evidence, not evidence of absence; POS/payment hardware is a plausible target class in general
Analyst note
a Gertec OUI on a globally-administered address identifies genuine Gertec hardware (likely a POS terminal or peripheral); two MA-L blocks plus an identifiable operating company put this well beyond a bare single-OUI shell registration.
[ 02 ] — OUI prefixes

Assignments by IEEE.

2
// registered prefixes2
  1. 78:57:B0MA-L
  2. C8:36:A3MA-L
[ 03 ] — Related

Keep digging.