Jastec — 2 prefixes (MA-L)

Jastec holds two IEEE MA-L (large, /24) OUI blocks — 00-1F-09 and 4C-8F-A5 — both registered to the identical org string "Jastec" with the identical registry address: Jastec B/D 2F, 92-7 Kumgok-dong, Boondang-gu, KR 463-804 (South Korea; the registry spelling "Boondang-gu" is reproduced verbatim from the source rather than corrected — the more common romanization is Bundang-gu, a district of Seongnam, Gyeonggi-do). Beyond the two-block IEEE registration itself, verification found no corroborating company detail: no website, no product line, and no device-type usage tied to either prefix turned up across maclookup.app, macvendors.com, or general web search, and several unrelated companies sharing the "Jastec"/"JASTEC" name (a Tokyo software firm acquired by NTT DATA, a Japanese superconductor-technology firm, a Korean automotive-diagnostics-tool maker, a Shanghai machinery firm) were checked and ruled out as candidates for the registrant. Both prefixes are assigned to "Jastec" per the authoritative IEEE MA-L registry; the Wireshark project's the Wireshark manufacturer database attributes 00-1F-09 to "Teledyne / Teledyne DALSA Inc.", a non-canonical third-party discrepancy that does not override the IEEE assignment and is footnoted below. Third-party "first registered" dates (2007-12-31 and 2013-01-09) shown on maclookup.app are database-scrape artifacts, not IEEE facts, and are not treated as registration dates.

IEEE assignment

2 prefixes → "Jastec", registry address Jastec B/D 2F, 92-7 Kumgok-dong, Boondang-gu, KR 463-804 [Confirmed] — the IEEE MA-L registry (cached IEEE MA-L extract, lines 2766 and 27341)

Registry / block size

MA-L (24-bit OUI) × 2: 00-1F-09, 4C-8F-A5; no MA-M/MA-S (the IEEE MA-S registry/mam.csv) assignments found [Confirmed] — the IEEE MA-L registry

Registration date

Unknown — IEEE MA-L data publishes no assignment/registration date; none present in the cached extract, so none is recorded (sourced null, not a placeholder) [Confirmed as to absence]

Third-party date caveat

maclookup.app displays "first registered" 2007-12-31 (00:1F:09) and 2013-01-09 (4C:8F:A5) — database-scrape artifacts, NOT IEEE facts, and NOT recorded as registration dates [Likely — reflects what the page displays] — https://maclookup.app/vendors/jastec

Third-party attribution footnote for 00-1F-09

Wireshark's the Wireshark manufacturer database file (release-4.0) attributes this block to "Teledyne / Teledyne DALSA Inc.", conflicting with the canonical IEEE the IEEE MA-L registry assignment to "Jastec" (corroborated by two independent macvendors.com queries also returning "Jastec"). Per registry authority, the IEEE assignment governs; the Wireshark entry is recorded here as a non-canonical discrepancy, not as an unresolved block [Confirmed IEEE / non-canonical variance] — the IEEE MA-L registry, https://raw.githubusercontent.com/wireshark/wireshark/release-4.0/manuf, https://api.macvendors.com/00:1F:09:00:00:00

Company identity / substance

Unknown — no website, product line, or device-type usage found for either prefix beyond the bare two-block IEEE registration; several unrelated same-named companies were checked and ruled out [Unknown] — maclookup.app, macvendors.com, general web search

Country

South Korea (KR), inferred from registry address [Confirmed] — the IEEE MA-L registry

Company status

Unknown — no active/inactive determination possible without a verifiable company identity [Unknown]

Device types

Unknown [Unknown]

Master row

no existing "vendor-jastec" row found in this site's own enrichment records prior to this entry — fresh lookup, not a re-verification [Confirmed] — this site's own enrichment records