2wcom Systems GmbH — 00:11:99 (MA-L)

A MAC address starting with 00:11:99 belongs to 2wcom Systems GmbH, a German manufacturer of professional broadcast equipment — typically found on audio-over-IP (AoIP) codecs, DAB/DAB+ and FM/RDS transmission gear, and satellite broadcast equipment rather than consumer devices.

2wcom traces its product line to Rohde & Schwarz's FM/RDS business, taken over in 1996 under Werner Drews. Wilhelm Sihn Jr. GmbH & Co. KG (WISI) acquired the company in 2011 and renamed it 2wcom Systems GmbH, headquartered at Am Sophienhof 8 in Flensburg, Germany.

The product range includes named hardware such as the MPX-2c and IP-4c codecs, alongside software platforms MoIN, up2talk, eyera, and nettwark. Named customers cited in third-party industry directories include TDF, EBU, WDR, and Teracom, consistent with a professional broadcast-infrastructure vendor rather than a shell registrant.

One relevant vulnerability is on record: CVE-2025-43953, a command-injection flaw in IP-4c firmware 2.16 allowing an authenticated admin/manager to run arbitrary code as root via the diagnostics ping/traceroute field. No vendor patch or advisory was found in this search, so patch status is Unknown rather than asserted unpatched. IEEE registry data shows exactly one OUI assignment for this vendor, with no assignment or registration date published.

Device class

Professional broadcast equipment — AoIP codecs, DAB/DAB+, FM/RDS, satellite broadcast gear [Confirmed]

Also seen on

IP-4c and MPX-2c broadcast codecs [Likely] (product line, not confirmed against the MAC prefix directly)

Registry block

MA-L, assignment 001199 (00:11:99) [Confirmed]

IEEE assignment

00:11:99 → 2wcom Systems GmbH, registered Am Sophienhof 8, Flensburg, DE 24941 [Confirmed] — the IEEE MA-L registry 001199

Registry / block size

MA-L (24-bit OUI); single assignment found for this vendor [Confirmed] — the IEEE MA-L registry 001199

HQ / country

Am Sophienhof 8, Flensburg, DE 24941, Germany [Confirmed] — the IEEE MA-L registry 001199

Company status

active [Likely] — https://www.2wcom.com/

Device types

AoIP codecs, DAB/DAB+ transmission equipment, FM/RDS gear, satellite broadcast equipment [Confirmed] — https://www.2wcom.com/

Notable products

MPX-2c, IP-4c, MoIN, up2talk, eyera, nettwark [Confirmed] — https://www.2wcom.com/

Third-party MAC corroboration

00:11:99 independently attributed to 2wcom Systems GmbH [Likely] — https://www.cleancss.com/mac-lookup/00-11-99

Company history

took over Rohde & Schwarz's FM/RDS product line in 1996 under Werner Drews; acquired by Wilhelm Sihn Jr. GmbH & Co. KG (WISI) in 2011 and renamed 2wcom Systems GmbH [Likely] — https://www.tab.org/member-services/associate-directory/2wcom-systems-gmbh

Registration date

not published — IEEE's public OUI data carries no assignment/registration date; any third-party "date registered" is a database artifact, not an IEEE fact [Confirmed] — the IEEE MA-L registry 001199

Security note

CVE-2025-43953, IP-4c firmware 2.16, command injection via diagnostics ping/traceroute field, CVSS 3.1 8.8 HIGH (CISA-ADP assessed), published 2025-09-22; vendor patch status Unknown (not checked against a 2wcom advisory page) [Confirmed] — https://nvd.nist.gov/vuln/detail/CVE-2025-43953

Related vendors

Wilhelm Sihn Jr. GmbH & Co. KG (WISI) — parent company since 2011 [Likely] — https://www.tab.org/member-services/associate-directory/2wcom-systems-gmbh

Analyst note

single-OUI vendor with verifiable corporate substance (named history, products, customers, one CVE) beyond the bare IEEE registration.