AS198806 — SIBUR-AS LLC SIBUR

AS198806 announces 1 IPv4 prefixes covering 512 addresses and 0 IPv6 prefixes.

About this network

SIBUR-AS is operated by LLC SIBUR.

What it's used for

• The address space carries corporate infrastructure for the SIBUR petrochemical group, as indicated by the netname SIBUR and registrant LLC SIBUR.
• The AS announces 512 IPv4 addresses across 1 prefix (91.239.98.0/23) and maintains 2 observed neighbours, a ratio consistent with an internal corporate estate rather than a transit or access network.
• Traffic from this AS represents internal business operations, office workers, and industrial systems for one of Russia's largest petrochemical companies.

Notable

• The registrant LLC SIBUR matches the AS holder and the netname SIBUR, confirming a single corporate entity.
• SIBUR is a major Russian petrochemical holding company; the AS supports its internal digital and operational infrastructure.
• The inventory consists of a single contiguous /23 block, typical of a corporate network with segmented internal addressing.

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

Announced prefixes

• 91.239.98.0/23

Upstream networks

• AS12389 PJSC Rostelecom
• AS25159 PJSC MegaFon

Adjacent networks

• AS12389 PJSC Rostelecom
• AS25159 PJSC MegaFon

Routing security

• RPKI: 0 valid, 0 invalid and 1 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 1 route objects.
• Listed in as-sets: AS-HURRICANE, AS-MFMSK, AS-ROSTELECOM.