HanDreamnet Co., Ltd. — 3 prefixes (MA-L)

A MAC address beginning B8:91:C9, 00:1A:F4, or FC:75:E6 belongs to HanDreamnet Co., Ltd., a South Korean network-security manufacturer, and typically identifies one of the company's Layer-2/Layer-3 enterprise security switches rather than a consumer device.

HanDreamnet is headquartered in Guro-gu, Seoul, and describes itself as a specialist in network access-level security. All three IEEE MA-L registrations list Guro-gu addresses, and the company's own trade listing describes product lines spanning network access security, network-attack blocking, Layer-2 security switches, and IP management.

The flagship line is the SubGate/SG-series security switch (for example the SG2228G), which performs ARP-spoofing, DoS, and port-scan detection and blocking at the switch port. HanDreamnet also ships the SG8700 backbone switch and a separate IP-management product, VIPM (Visual IP Manager). The vendor states it shipped the world's first Layer-2 security switch in 2007 and claims OEM relationships with Samsung and LG-Nortel; these are vendor-stated claims that could not be independently verified.

Independent corroboration beyond the vendor's own marketing exists: SIEM vendor Stellar Cyber ships a dedicated "HanDreamnet Switch Connector" for ingesting logs from these switches, and reseller Protektnet stocks the Handreamnet security-switch line. Together with three geographically-consistent OUI assignments, this satisfies the bar for a genuine, identifiable manufacturer rather than a bare single-OUI shell registration.

No CVEs or documented vulnerabilities specific to HanDreamnet products turned up in NVD-style searches; that is an absence of findings, not a confirmed clean record, and is reported as Unknown. IEEE publishes no assignment/registration date for any of the three OUIs, so none is asserted here.

IEEE assignment

3 prefixes → Handreamnet, registered Seoul, KR [Confirmed] — the IEEE MA-L registry (lines 33388, 34495, 36015)

Registry / block size

MA-L (24-bit OUI); 3 IEEE prefixes on file for this vendor [Confirmed] — the IEEE MA-L registry

HQ / country

Seoul, South Korea; all three registered addresses cluster in Guro-gu (#1203 Ace High-end Tower II, 61 Digital-ro 26-gil; #1209 MarioTower, two address variants) [Confirmed] — the IEEE MA-L registry; corporate HQ Guro-gu, Seoul [Confirmed] — handream.net

Company status

active [Confirmed] — handream.net, handreamnet.en.ec21.com

Device types

Layer-2/Layer-3 enterprise network security switches with built-in ARP-spoofing/DoS/port-scan detection and blocking; IP-management software (VIPM) [Confirmed] — handream.net, netmanias.com

Notable products

SubGate SG2228G, SG8700 backbone switch, VIPM (Visual IP Manager) [Confirmed] — handream.net/en/product/subgate-security-switch, scribd SG2228G datasheet

Verified sample prefixes (all MA-L, Handreamnet)

B8:91:C9, 00:1A:F4, FC:75:E6 [Confirmed] — the IEEE MA-L registry

Registration date

Unknown — IEEE's public OUI data (Registry, Assignment, Organization Name, Organization Address) contains no date field; no date is asserted [Confirmed] — the IEEE MA-L registry

Independent corroboration

Stellar Cyber ships a "HanDreamnet Switch Connector" for log ingestion; reseller Protektnet stocks the Handreamnet security-switch line [Confirmed] — docs.stellarcyber.ai, protektnet.com

Vendor-stated claims (not independently verified)

shipped "world's first" L2 security switch (2007); OEM relationships with Samsung and LG-Nortel [Likely] — netmanias.com

Security history

no CVEs or documented vulnerabilities found for HanDreamnet products in NVD-style searches; absence of finding, not a confirmed clean record [Unknown]

Related vendors

none identified

Analyst note

three geographically-consistent OUI assignments plus independent third-party corroboration (SIEM connector, reseller) place this above the single-OUI-shell bar; treat the "world's first" and OEM claims as vendor marketing, not confirmed facts.