AS36490 — OWENSCORNING

AS36490 announces 2 IPv4 prefixes covering 768 addresses and 1 IPv6 prefixes.

About this network

OWENSCORNING is the autonomous system for Owens Corning, a major US building products manufacturer.

What it's used for

• The address space is registered under the netname OWENS-CORNING for both announced IPv4 blocks, indicating a dedicated corporate estate.
• With 768 IPv4 addresses across 2 prefixes and only 2 observed neighbours, the low neighbour-to-address ratio suggests an internal corporate network rather than a transit or access provider.

Notable

• Registrants for both prefixes match the AS holder, identified as "Owens-Corning; Internet IP Technical contact".
• The company was formerly known as Owens-Corning Fiberglass Corporation, a history noted in secondary sources regarding its establishment and asbestos exposure litigation.
• The inventory consists of two small IPv4 blocks (205.204.4.0/23 and 205.204.1.0/24) and a single IPv6 prefix (2620:103:8000::/45), typical of a large enterprise managing its own IP space.

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

Announced prefixes

• 205.204.1.0/24
• 205.204.4.0/23
• 2620:103:8000::/45

Upstream networks

• AS10796 Charter Communications Inc
• AS13490 Buckeye Cablevision, Inc.

Adjacent networks

• AS10796 Charter Communications Inc
• AS13490 Buckeye Cablevision, Inc.