Industrial Software Co — 2 prefixes (MA-L)

The slug vendor-industrial-software resolves, in the first-party IEEE OUI registry, to Industrial Software Co, a Bulgarian company that holds two MA-L (24-bit) blocks — FC:E6:6A and 14:B1:26 — both registered to the same address at 85 Aleksandyr Malinov Blvd., Office 6, Sofia, BG 1715, Bulgaria. Consolidating the two blocks into a single vendor entry is more useful than two near-identical per-prefix pages, since both trace to one organization. IEEE publishes no assignment dates for MA-L blocks, so no registration date is recorded here. A name-collision caveat is worth surfacing for anyone researching this entry: an unrelated Chinese entity, "Shandong SIASUN Industrial Software Research Institute Co., Ltd.," holds the separate MA-M block 28:36:13:0 (a 28-bit slice of the IEEE-administered 28:36:13 range — the MA-L 28:36:13 itself belongs to the IEEE Registration Authority, not to any single vendor). That SIASUN entity is a distinct organization and does NOT own these Bulgarian MA-L blocks; do not conflate the two. Device type, products, and corporate detail for "Industrial Software Co" itself are not established from the registry alone, and no independent public source was confirmed for the Bulgarian company, so those fields stay Unknown rather than borrowing the SIASUN profile.

IEEE assignment

2 prefixes → Industrial Software Co [Confirmed] — IEEE MA-L (lines 9970, 11509)

Registry / block size

MA-L (24-bit OUI); holds 2 IEEE prefixes (~33.5M addresses) [Confirmed] — IEEE the IEEE MA-L registry. NOTE: IEEE's public OUI data publishes NO assignment/registration date (the IEEE MA-L registry columns are only Registry, Assignment, Organization Name, Organization Address); any "date registered" on third-party tools is a database artifact, not an IEEE fact.

Verified prefixes (both MA-L, Industrial Software Co)

FC:E6:6A, 14:B1:26 [Confirmed] — IEEE the IEEE MA-L registry (FCE66A line 9970, 14B126 line 11509)

HQ / country

85, Aleksandyr Malinov Blvd. Office 6, Sofia, BG 1715, Bulgaria (registry address) [Confirmed] — IEEE the IEEE MA-L registry

Country

Bulgaria (BG) [Confirmed] — IEEE the IEEE MA-L registry

Allocation date

Unknown — IEEE publishes no registration dates for MA-L OUI assignments; no first-party date exists [Unknown] — IEEE the IEEE MA-L registry (no date column)

Company status

Unknown — not confirmed from an independent public source for the Bulgarian "Industrial Software Co" [Unknown]

Device types

Unknown — not established from the registry; no confirmed public product catalog for this specific Bulgarian entity [Unknown]

Notable products

Unknown [Unknown]

Name-collision note

"Shandong SIASUN Industrial Software Research Institute Co., Ltd." (Jinan, Shandong, CN) holds the SEPARATE MA-M block 28:36:13:0, not these MA-L blocks; the MA-L 28:36:13 prefix itself is held by the IEEE Registration Authority. The SIASUN entity is a distinct OT/ICS automation organization and is NOT the holder of FC:E6:6A or 14:B1:26. [Confirmed] — IEEE the IEEE MA-M registry line 4092 (2836130 → Shandong SIASUN), the IEEE MA-L registry line 16653 (283613 → IEEE Registration Authority)

No MA-M / OUI-36 match for this org

no FC:E6:6A or 14:B1:26 sub-blocks in the IEEE MA-M registry or the IEEE MA-S registry [Confirmed] — IEEE the IEEE MA-M registry, the IEEE MA-S registry

Analyst note

A globally-administered MAC starting FC:E6:6A or 14:B1:26 identifies hardware registered to Industrial Software Co (Bulgaria). The product/device profile of that hardware is not publicly established; do not import the SIASUN industrial-automation profile, which belongs to a different registrant.