Italtel S.p.A./RF-UP-I — 2 prefixes (MA-L)

A MAC address starting with 00:01:5B or 00:90:AE belongs to Italtel S.p.A., an Italian telecommunications and networking equipment manufacturer, and typically appears on network infrastructure or IP-communication hardware rather than consumer devices.

The IEEE registrant name on both blocks reads "ITALTEL S.p.A/RF-UP-I," recorded at two different Italian addresses: one near Settimo Milanese in Milan province, the other at Localita' Boschetto in L'Aquila province. Both are full 24-bit MA-L blocks assigned solely to Italtel, with no shared-base or sub-allocation caveat needed.

Italtel itself is a long-running company, not a shell registrant: founded in 1921 as a Siemens Italy branch and rebranded Italtel in 1981, it remains an active ICT/telecom vendor (network management, NFV, IP communications) now owned by Nextalia SGR, Clessidra Capital Credit Fund, and TIM. Fifteen NVD-listed CVEs against named Italtel products (NetMatch-S CI, Embrace, i-MCS NFV) corroborate a live, currently-assessed product line, though none of those CVE records tie specifically to the 00:01:5B or 00:90:AE hardware prefixes — they track software, not MAC ranges.

A commonly cited "09 November 2000" registration date for this vendor comes from a third-party aggregator (maclookup.app), not from IEEE — IEEE's own oui.txt/oui.csv publishes no assignment date field for any OUI, so that date should not be presented as an IEEE fact.

IEEE assignment

2 prefixes (00:01:5B, 00:90:AE) → ITALTEL S.p.A/RF-UP-I [Confirmed] — the IEEE MA-L registry 00015B, the IEEE MA-L registry 0090AE

Registry / block size

MA-L (24-bit OUI); 2 confirmed prefixes; no MA-M or MA-S entries found under Italtel [Confirmed] — the IEEE MA-L registry 00015B, the IEEE MA-L registry 0090AE; the IEEE MA-M registry and the IEEE MA-S registry (grepped for italtel, no matches)

HQ / country

Italy (IT); registry addresses in Milan province (Settimo Milanese area) and L'Aquila province [Confirmed] — the IEEE MA-L registry 00015B, the IEEE MA-L registry 0090AE

Company status

active — Italtel S.p.A. operates a live corporate website and current ownership structure (Nextalia SGR, Clessidra Capital Credit Fund, TIM) [Confirmed] — https://en.wikipedia.org/wiki/Italtel

Device types

network management systems, IP communication systems, NFV platforms [Likely] — https://maclookup.app/vendors/italtel-s-p-a, https://services.nvd.nist.gov/rest/json/cves/2.0?keywordSearch=Italtel

Notable products

NetMatch-S CI, Embrace, i-MCS NFV [Confirmed] — https://services.nvd.nist.gov/rest/json/cves/2.0?keywordSearch=Italtel

Verified prefixes (both MA-L, ITALTEL S.p.A/RF-UP-I)

00:01:5B, 00:90:AE [Confirmed] — the IEEE MA-L registry 00015B, the IEEE MA-L registry 0090AE

Historic block

none identified beyond the two confirmed MA-L assignments [Unknown]

Special note

IEEE oui.txt/oui.csv publishes no registration date for either prefix; the widely repeated "09 November 2000" figure is a maclookup.app third-party database artifact, not an IEEE fact. No malware/trojan association was found for this OUI in any source checked as of an August 2026 search of the NVD CVE database.

[Confirmed] — https://standards-oui.ieee.org/oui/oui.txt, https://maclookup.app/vendors/italtel-s-p-a

Related vendors

none identified [Unknown]

Analyst note

Both prefixes are full MA-L blocks assigned solely to Italtel, so an OUI match reliably indicates genuine Italtel network/telecom hardware; the 15 NVD CVEs against Italtel products are software findings and are not shown by any source to be specific to devices carrying these two prefixes.

[Confirmed] — https://services.nvd.nist.gov/rest/json/cves/2.0?keywordSearch=Italtel