AS21756 — SIDERCA S.A.I.C.

AS21756 announces 5 IPv4 prefixes covering 1,280 addresses and 0 IPv6 prefixes.

About this network

AS21756 is operated by Siderca S.A.I.C., an Argentine steel tube producer.

What it's used for

• The address space is registered under netnames matching the holder, such as 200.1.117.0 - 200.1.117.255 and 200.9.229.0 - 200.9.229.255, indicating internal corporate usage.
• The AS announces 1280 IPv4 addresses across 5 prefixes with 3 observed neighbours, a ratio consistent with a small internal corporate estate rather than a public access or transit network.

Notable

• Four of the five prefixes are registered to Siderca S.A.I.C., while 201.234.38.0/24 is registered to Cirion Technologies Argentina S.A., suggesting a leased or third-party managed segment.
• Siderca S.A.I.C. operates as a subsidiary of Tenaris S.A., a global steel tube manufacturer controlled by the Techint group.
• The inventory consists of five /24 blocks, all located in Argentina, with no IPv6 prefixes announced.

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

Announced prefixes

• 200.1.117.0/24
• 200.9.229.0/24
• 200.69.130.0/24
• 200.80.222.0/24
• 201.234.38.0/24

Upstream networks

• AS11014 CPS
• AS11664 Techtel LMDS Comunicaciones Interactivas S.A.
• AS3356 Level 3 Parent, LLC

Adjacent networks

• AS11014 CPS
• AS11664 Techtel LMDS Comunicaciones Interactivas S.A.
• AS3356 Level 3 Parent, LLC