AESYS S.p.A. — 00:11:BF (MA-L)

A MAC address starting with 00:11:BF belongs to AESYS S.p.A., an Italian manufacturer whose devices most often surface as traffic-control and transit-signage equipment rather than general-purpose networking gear.

AESYS holds a single IEEE MA-L block, 00:11:BF, registered to its Bergamo, Italy headquarters. Unlike large multi-OUI vendors, no companion MA-M or MA-S registrations exist for the company in the cached IEEE registries, so this one prefix is the entirety of its known MAC address footprint.

Founded in 1977, AESYS builds Variable Message Signs (VMS) for highways and tunnels, Passenger Information Display Systems (PIDS) for rail and bus networks, mobile VMS trailers, and LED/LCD digital signage, sold from an active corporate site that also publishes a Code of Ethics and a Vulnerability Disclosure Policy.

That product mix means a 00:11:BF address on a network is far more likely to be a roadside sign controller or a transit-platform display than a laptop, phone, or router. No CVE naming AESYS appears in the NVD as of an August 2026 search — a sourced negative, not a certified clean record.

Also seen on

mobile VMS trailers and LED/LCD digital signage (aesys.com)

IEEE assignment

00:11:BF → AESYS S.p.A., registered Brusaporto, Bergamo, Italy [Confirmed] — the IEEE MA-L registry 0011BF

Registry / block size

MA-L (24-bit OUI); AESYS holds exactly 1 IEEE prefix, no MA-M/MA-S registrations located [Confirmed] — the IEEE MA-L registry 0011BF; the IEEE MA-S registry; the IEEE MA-M registry

HQ / country

Via Artigiani, 41, Brusaporto, Bergamo 24060, IT [Confirmed] — the IEEE MA-L registry 0011BF; https://hwaddress.com/company/aesys-spa/

Company status

active [Confirmed] — https://www.aesys.com/

Founded

1977 [Confirmed] — https://www.aesys.com/company/

Device types

Variable Message Signs (VMS), Passenger Information Display Systems (PIDS), mobile VMS trailers, LED/LCD digital signage [Confirmed] — https://www.aesys.com/products-solutions/

Notable products

Variable Message Signs (VMS), Passenger Information Display Systems (PIDS) [Confirmed] — https://www.aesys.com/products-solutions/traffic/variable-message-sign-vms.html

Verified prefix cross-check

00:11:BF → AESYS S.p.A. [Confirmed] — https://hwaddress.com/company/aesys-spa/, https://udger.com/resources/mac-address-vendor-detail?name=aesys_s-p-a

Security posture

publishes a Vulnerability Disclosure Policy with a security contact (security-issue@aesys.com); no CVE naming AESYS found in the NVD as of an August 2026 search [Likely] — https://www.aesys.com/aesysadmin/uploads/file/vdp-en.pdf

Related vendors

none identified [Unknown] — no corroborating source found

IEEE registration date

not published by IEEE for any OUI; none asserted here [Confirmed] — the IEEE MA-L registry

Analyst note

single-OUI vendor confirmed as an identifiable, operating manufacturer (not a registry-only shell); 00:11:BF sightings should be read as traffic-control or transit-signage hardware, not generic IT equipment [Confirmed] — https://www.aesys.com/products-solutions/