FireBrick Ltd — 2 prefixes (MA-L)

FireBrick Ltd is a UK networking-appliance manufacturer that holds two IEEE MA-L blocks: 00:03:97, registered to "FireBrick Limited," and 9C:89:1E, registered to "FireBrick Ltd." Both carry the same registrant address — c/o Andrews & Arnold Ltd, Enterprise Court, Downmill Road, Bracknell, Berkshire, RG12 1QS, GB — which reflects the company's origins: FireBrick was founded in 1998 out of the combined expertise of Andrews & Arnold Ltd (a UK ISP) and Watchfront Ltd, and A&A remains the registered office. The company designs and manufactures ISP- and enterprise-grade routers and firewalls in the UK, with a multi-generation product line tied to these OUIs: the early FireBrick Plus/SOHO (1999–2000), FB105 (2006–2009), FB2500/FB2700, the FB6000 series (1 Gb/s ISP/telco-grade appliances providing LNS, BGP router, and GGSN functions), the FB2900 (2018, ~750 Mbps), and the current FB9000 (a 10 G datacentre appliance). The strongest corroboration that these OUIs identify genuine FireBrick hardware is first-party: FireBrick's own FB2700 product manual, in "Appendix C. MAC Addresses usage," explicitly documents that its devices ship using OUI 00:03:97 — vendor documentation confirming the exact prefix that the third-party IEEE registration lists under the matching name. No CVE or public security-advisory history surfaced for the FB2700/FB6000/FB9000 lines in this pass; that is recorded as "none found," not as a security claim in either direction.

IEEE assignment (block 1)

00:03:97 → "FireBrick Limited", c/o Andrews & Arnold Ltd, Bracknell, Berkshire, GB [Confirmed] — IEEE MA-L; https://maclookup.app/macaddress/000397

IEEE assignment (block 2)

9C:89:1E → "FireBrick Ltd", c/o Andrews & Arnold Ltd, Bracknell, Berkshire, GB [Confirmed] — IEEE MA-L

Registry / block size

MA-L (24-bit OUI); two assignments under slightly different legal-name spellings. No MA-M or MA-S (36-bit) assignments found in the cached the IEEE MA-M registry / the IEEE MA-S registry registries [Confirmed] — the cached registry snapshots{oui,mam,oui36}.csv

HQ / country

c/o Andrews & Arnold Ltd, Enterprise Court, Downmill Road, Bracknell, Berkshire RG12 1QS, GB (registry address; also FireBrick's registered office via its A&A/Watchfront origins) [Confirmed] — IEEE MA-L; https://www.firebrick.co.uk/about/history/

Company status

active [Confirmed] — https://www.firebrick.co.uk/

Company origin

founded 1998 from the combined expertise of Andrews & Arnold Ltd and Watchfront Ltd; devices designed and manufactured in the UK (PCBs populated/soldered in Newbury per company history) [Confirmed] — https://www.firebrick.co.uk/about/history/

Device types

ISP/enterprise-grade routers and firewalls [Confirmed] — https://www.firebrick.co.uk/

Notable products

FireBrick Plus/SOHO (1999–2000), FB105, FB2500/FB2700, FB6000 series (1 Gb/s; LNS/BGP/GGSN), FB2900 (2018, ~750 Mbps), FB9000 (10 G datacentre appliance) [Confirmed] — https://www.firebrick.co.uk/fb6000/, https://www.firebrick.co.uk/fb2900/, https://www.firebrick.co.uk/fb9000/

First-party OUI corroboration

FireBrick's FB2700 manual ("Appendix C. MAC Addresses usage") documents devices shipping with OUI 00:03:97 [Confirmed] — https://download.firebrick.co.uk/fbsoftware/2701/V1.39.000/FB2700/V1.39.000-2701-FB2700-Rufus-html/mac_addresses.html

Registration dates

Unknown. IEEE's public OUI registry publishes NO assignment/registration date; the "Initial registration 09 Nov 2000 / Last updated 12 Nov 2017" shown by maclookup.app for 00:03:97 are that tool's own database artifacts, NOT IEEE facts, and are not recorded as registration dates

[Confirmed] — https://maclookup.app/macaddress/000397

Security context

no CVE or public security-advisory history found for FB2700/FB6000/FB9000 in this pass; recorded as "none found," not as a security assurance [Likely] — web search (no results)

IANA Reference

N/A — no IANA/RFC reference applies to an OUI vendor entry; stays blank