AS6071 UNISYS-AS-E

UNISYS-AS-E is one of several autonomous systems run by Unisys Corporation, the American IT services and enterprise-computing company. It carries part of Unisys's own corporate and customer-facing network.

What it's used for

• Corporate connectivity for Unisys itself and for the outsourced IT and managed services it runs on behalf of clients.
• All of its announced space sits inside 129.220.0.0/16, a block registered to Unisys — this is company-owned addressing, not resold or leased space.

Notable

• An enterprise network, not a commercial ISP: the addresses here belong to a single company's infrastructure and hosted client systems.
• Unisys operates a sibling AS, [AS6072](https://asn.ipinfo.app/AS6072) (UNISYS-AS-C), and the two split the company's routing rather than representing different businesses.

Interesting

• ARIN registered this number to Unisys in November 1995, in the same sequential run as its sibling — a genuine mid-1990s allocation from the era when large enterprises routinely ran their own AS.
• Unisys traces back to the 1986 merger of Burroughs and Sperry, two of the original mainframe makers, and still supports ClearPath mainframes alongside modern cloud and security services.