AS203313 — OLDNET OldNET Krzysztof Cukierski

AS203313 announces 1 IPv4 prefixes covering 512 addresses and 0 IPv6 prefixes.

About this network

The AS handle OLDNET is held by OldNET Krzysztof Cukierski.

What it's used for

• The address space carries residential or small business access traffic, evidenced by reverse DNS entries such as pc128-42.oldnet.pl and pc255-42.oldnet.pl.
• The network announces 512 IPv4 addresses within a single prefix (91.228.42.0/23) and maintains only 1 observed neighbour, a ratio indicative of a small access or eyeball network rather than a transit provider.
• Traffic from this AS consists of subscriber internet access for local customers in Poland.

Notable

• The RDAP registrant OldNET Krzysztof Cukierski matches the AS holder and the netname PL-OLDNET, confirming consistent ownership.
• The inventory is compact, consisting of a single /23 block with no announced IPv6 prefixes.

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

Announced prefixes

• 91.228.42.0/23

Upstream networks

• AS31242 P4 Sp. z o.o.

Adjacent networks

• AS31242 P4 Sp. z o.o.

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-KOPNET, AS-MULTI-NET, AS-TKPSA, AS-TRANSROUTE-SPEC, AS5617:AS-PL.