00:1B:58 — ACE CAD Enterprise Co., Ltd.

A MAC address starting with 00:1B:58 belongs to ACE CAD Enterprise Co., Ltd., a Taiwan-based manufacturer of graphics/CAD digitizing tablets and digital notepads, typically seen on a Bluetooth-connected digitizing device rather than standalone network gear.

ACE CAD Enterprise holds a single IEEE MA-L (/24) block, 00:1B:58, registered to an address in Hsin Tien City, Taipei Hsien. No MA-M (/28) or MA-S (/36) sub-assignments exist under this name in the cached registries.

The company is independently corroborated beyond the bare OUI registration: an FCC equipment-authorization grantee record names ACE CAD Enterprise Co., Ltd. as applicant for digitizing-tablet peripherals, and a multi-generation product catalog — the Acecat Flair, Acecat 302, DigiMemo digital notepad with the DigiPen P100 stylus, and a later Bluetooth digital notepad line — is documented across distributor listings and an archived driver disc.

These are input peripherals (serial, USB, or Bluetooth-connected drawing tablets and notepads) rather than routed IP/Ethernet endpoints, so where a MAC/OUI appears on these products it most likely corresponds to a peripheral radio interface, such as on the Bluetooth notepad line, not a networked host in the usual sense.

No CVE, security advisory, or documented vulnerability tied to ACECAD or ACE CAD Enterprise products was found as of a September 2026 search of CVE and vulnerability-catalog sources.

Device class

Graphics/CAD digitizing tablets and digital notepads — serial, USB, or Bluetooth-connected input peripherals, not standalone networked/IoT endpoints (https://fccid.io/H2UACE04)

Vendor

ACE CAD Enterprise Co., Ltd., registered at Hsin Tien City, Taipei Hsien, Taiwan (the IEEE MA-L registry 001B58)

Registry footprint

One MA-L (/24) block on record; no MA-M or MA-S sub-assignments found under this name (the IEEE MA-M registry, the IEEE MA-S registry)

Regulatory corroboration

FCC equipment-authorization grantee for digitizing-tablet peripherals, filings H2UACE04 and H2UACE07 (https://fccid.io/H2UACE04, https://fccid.io/H2UACE07)

Vendor name

ACE CAD Enterprise Co., Ltd. [Confirmed] (the IEEE MA-L registry 001B58)

Registry assignment

MA-L, 00:1B:58 [Confirmed] (the IEEE MA-L registry 001B58)

Registered address

2F, No. 94, Bao Chung Road, Hsin Tien City, Taipei Hsien, Taiwan 23144 [Confirmed] (the IEEE MA-L registry 001B58)

Additional MA-M/MA-S assignments

None found under this name [Confirmed] (the IEEE MA-M registry; the IEEE MA-S registry)

Company identity

Corroborated as a real, operating Taiwan-based peripheral manufacturer via FCC filing and trade-directory listing [Confirmed] (https://fccid.io/H2UACE04, https://www.cens.com/cens/html/en/supplier/supplier_home_9727.html)

Product line

Digitizing tablets and digital notepads, spanning multiple generations [Confirmed] (https://archive.org/details/acecat-flair, https://usm.channelonline.com/txctech/previewstore/Products/overview/M019070611)

Device-to-network correspondence

Peripheral radio interface (e.g. Bluetooth notepad line), not a routed network endpoint [Likely] (https://fccid.io/H2UACE04, https://fccid.io/H2UACE07)

Security history

No CVE or advisory found as of a September 2026 search [Likely] (https://www.cve.org/, https://www.cvedetails.com/, https://www.cisa.gov/known-exploited-vulnerabilities-catalog)

OUI registration date

Unknown — IEEE does not publish OUI allocation dates [Unknown]