AS201476 — Wolfnet ISP Alliance a.s.

AS201476 announces 12 IPv4 prefixes covering 8,704 addresses and 2 IPv6 prefixes.

About this network

WOLFNET is operated by Wolfnet ISP Alliance a.s.

What it's used for

• The address space carries static residential and business endpoints, evidenced by reverse DNS entries such as static.wolfnet.cz, noronet.cz, and racingnet.cz.
• The AS announces 8,704 IPv4 addresses across 12 prefixes and 2 IPv6 prefixes, with only 1 observed neighbour, indicating a small access network rather than a transit provider.
• Traffic consists of subscriber connections for internet access, consistent with the operator's role as a Czech ISP.

Notable

• Registrants include GRAPESC, CoProSys Tech-c, and System NET Line s. r. o., reflecting historical acquisitions or leased space now consolidated under the Wolfnet brand.
• The inventory is fragmented across multiple netnames like CZ-GRAPESC, NORONET-CZ, and NET-LINE-CZ, suggesting a history of merging smaller Czech ISPs.
• The address inventory is finely subdivided into /22 and /24 blocks, typical of an internal corporate estate managing distinct customer segments or legacy acquisitions.

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

Announced prefixes

• 5.183.12.0/22
• 77.104.194.0/24
• 77.104.210.0/24
• 77.104.216.0/24
• 77.104.223.0/24
• 77.104.240.0/24
• 77.104.245.0/24
• 94.138.116.0/22
• 94.138.120.0/22
• 185.73.100.0/22
• 185.73.104.0/21
• 185.167.184.0/22
• 2001:678:112c::/48
• 2a03:4260::/29

Upstream networks

• AS47232 ISP Alliance a.s.

Adjacent networks

• AS47232 ISP Alliance a.s.

Routing security

• RPKI: 14 valid, 0 invalid and 1 not-found announcements; 17 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 37 route objects.
• Listed in as-sets: AS-GRAPESC-CZ, AS-HURRICANEV6, AS-ISPALLIANCE-CZ.