AS3743 — ARCEL-2

AS3743 announces 6 IPv4 prefixes covering 1,792 addresses and 0 IPv6 prefixes.

About this network

The network of Cleveland-Cliffs Steel LLC (ARCEL-2), the US steelmaker, with its registry record listed in Chicago, Illinois.

What it's used for

• Corporate and industrial networking — offices, mills, and the systems that run them.

Notable

• Enterprise address space: it serves a manufacturer's own operations, not customers or subscribers.
• Announces a small footprint, on the order of a couple of thousand IPv4 addresses.

Interesting

• The ARCEL handle is a leftover from ArcelorMittal USA, whose US steel business Cleveland-Cliffs acquired in 2020 — the AS number moved with the assets while the registry handle stayed put, a common way a handle ends up naming a company that no longer holds it.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 156.144.51.0/24
• 156.144.99.0/24
• 156.144.100.0/24
• 156.144.108.0/23
• 156.144.208.0/24
• 156.144.249.0/24

Upstream networks

• AS209 CenturyLink Communications, LLC

Adjacent networks

• AS209 CenturyLink Communications, LLC