MAC address vendor

THE GOODYEAR TIRE & RUBBER COMPANY MAC prefix identification

Primary prefix
7C:E1:52
Block
MA-L

Summary

// what this is
THE Goodyear TIRE & Rubber is registered to MAC prefix 7C:E1:52 and 1 more in the IEEE OUI database. When a device's MAC address begins with 7C:E1:52, that block was registered by THE Goodyear TIRE & Rubber — the OUI identifies the maker of the network hardware, which is not always the brand on the device.
// analyst note
Both MA-L assignments are 24-bit prefixes, leaving 24 suffix bits and 16,777,216 possible suffix values each. Their first-byte Group and Local bits are both 0. A prefix match is registry assignment evidence only; it does not establish a particular device, product mapping, deployment, or security state.
[ 01 ] — Context

About this vendor.

Updated  ·  Confidence: High  ·  3 sources  ·  How this page is checked

A MAC address beginning with 7C:E1:52 or 00:40:8D matches an IEEE MA-L assignment to THE GOODYEAR TIRE & RUBBER COMPANY or the separately listed name variant THE GOODYEAR TIRE & RUBBER CO.; it does not identify a specific device. The supplied company page describes Goodyear as a tire and technology company with more than 125 years of experience. [https://standards-oui.ieee.org/oui/oui.csv] [https://corporate.goodyear.com/us/en/company.html]

Both assignments are 24-bit prefixes, leaving 24 suffix bits, or 16,777,216 possible suffix values per prefix. For each exact prefix, the first-byte Group bit and Local bit are both 0. Changing either bit changes the prefix; these bit values do not describe variation within the fixed assignment. A matching address indicates a registry prefix match, not an observed device count, shipment count, deployment, traffic prevalence, or security state. [https://www.rfc-editor.org/rfc/rfc7042.txt]

The company page describes tires, tire performance and technology, and mobility as company-level areas. It does not map a product or device category to either prefix, so a match cannot establish that a specific Goodyear product uses it. [https://corporate.goodyear.com/us/en/company.html]

Registry match
THE GOODYEAR TIRE & RUBBER COMPANY / THE GOODYEAR TIRE & RUBBER CO. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
Full prefixes
7C:E1:52 (MA-L) and 00:40:8D (MA-L) [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
Company
THE GOODYEAR TIRE & RUBBER COMPANY [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
Company context
Goodyear says it develops tires, technologies, and solutions for vehicles on roads, racetracks, and aircraft. These activities are company context; the supplied sources do not link either registry prefix to a particular product or device.
Registry assignments
The IEEE listing records MA-L prefixes 7C:E1:52 (listed as THE GOODYEAR TIRE & RUBBER COMPANY) and 00:40:8D (listed as THE GOODYEAR TIRE & RUBBER CO.). Each 24-bit prefix leaves 24 bits for the remainder of a 48-bit identifier, or 16,777,216 possible suffix values. In both prefixes, the group bit and local bit are zero.
Registry
MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
Prefixes
7C:E1:52, 00:40:8D [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
Industry
Tires and tire technology [Confirmed] — https://corporate.goodyear.com/us/en/company.html
Notable products
Tires [Confirmed] — https://corporate.goodyear.com/us/en/company.html
Country
United States [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
Website
https://corporate.goodyear.com/us/en/company.html [Confirmed] — https://corporate.goodyear.com/us/en/company.html
Device types
Unknown [Unknown] — https://corporate.goodyear.com/us/en/company.html
Organization status
Unknown [Unknown] — https://corporate.goodyear.com/us/en/company.html
Related vendors
Unknown [Unknown] — https://corporate.goodyear.com/us/en/company.html
[ 02 ] — OUI prefixes

Assignments by IEEE.

2
// registered prefixes2
  1. 7C:E1:52MA-L
  2. 00:40:8DMA-L
[ 03 ] — Related

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