AS42576 — INTRSC-AS

AS42576 announces 2 IPv4 prefixes covering 512 addresses and 1 IPv6 prefixes.

About this network

The AS handle INTRSC-AS is held by CERT NGO.

What it's used for

• The address space carries a mix of general business and specific service endpoints, evidenced by the netname INTRSC-NET and the reverse DNS record mail.dc9.io.
• The AS announces 512 IPv4 addresses across 2 prefixes and maintains 3 observed neighbours, a ratio consistent with a small-scale business or internal network rather than a transit provider.
• Traffic from this AS represents office workers and web/API endpoints for the organization, given its registration as a non-governmental organization.

Notable

• Registrants do not fully agree with the announcer; while 91.192.224.0/24 is registered to Maciej Jan Broniarz trading as CERT NGO, 193.3.166.0/24 is registered to Leon Sp. z o.o. under the netname PL-LEON-20211027.
• The address inventory consists of two distinct /24 blocks, one of which is associated with a different legal entity (Leon Sp. z o.o.), suggesting a multi-tenant or leased arrangement within the AS.

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

Announced prefixes

• 91.192.224.0/24
• 193.3.166.0/24
• 2001:678:664::/48

Upstream networks

• AS15694 Atman Sp. z o.o.
• AS201434 CITYSTRADA S.A.
• AS6939 Hurricane Electric LLC
• AS57463 NetIX Communications JSC
• AS24748 Atman Sp. z o.o.

Adjacent networks

• AS15694 Atman Sp. z o.o.
• AS201434 CITYSTRADA S.A.
• AS6939 Hurricane Electric LLC
• AS57463 NetIX Communications JSC
• AS24748 Atman Sp. z o.o.

Internet exchanges

• Equinix Internet Exchange Warsaw — Warsaw, Poland
• Thinx IX — Warsaw, Poland