AS25538 — IN-ULM

AS25538 announces 3 IPv4 prefixes covering 5,376 addresses and 16 IPv6 prefixes.

About this network

The AS handle IN-ULM is held by Internet Ulm/Neu-Ulm e.V.

What it's used for

• The address space carries regional internet access services, evidenced by reverse DNS entries such as loghost.in-ulm.de and in-ulm.de, and netnames like DE-ECOM-20000808 and PAUL-NET.
• With 5,376 IPv4 addresses announced across 3 prefixes and only 5 observed neighbours, the ratio indicates a local access or eyeball network rather than a transit provider.

Notable

• All registrants for the announced prefixes are listed as Internet Ulm/Neu-Ulm e.V., matching the AS holder.
• The inventory includes a large IPv6 block (2001:1410::/32) alongside the IPv4 space, suggesting a dual-stack regional infrastructure.
• The organization is identified as a non-profit entity serving the Ulm/Neu-Ulm region in Germany.

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

Announced prefixes

• 91.210.72.0/22
• 193.110.90.0/24
• 217.10.0.0/20
• 2001:1410::/36
• 2001:1410:1001::/48
• 2001:1410:1002::/47
• 2001:1410:1004::/46
• 2001:1410:1008::/45
• 2001:1410:1010::/44
• 2001:1410:1020::/43
• 2001:1410:1040::/42
• 2001:1410:1080::/41
• 2001:1410:1100::/40
• 2001:1410:1200::/39
• 2001:1410:1400::/38
• 2001:1410:1800::/37
• 2001:1410:2000::/35
• 2001:1410:4000::/34
• 2001:1410:8000::/33

Upstream networks

• AS48284 SWU TeleNet GmbH
• AS41051 Openfactory GmbH
• AS6939 Hurricane Electric LLC

Downstream networks

• AS219090 Temporaerhaus e.V.

Adjacent networks

• AS48284 SWU TeleNet GmbH
• AS219090 Temporaerhaus e.V.
• AS6939 Hurricane Electric LLC
• AS41051 Openfactory GmbH
• AS553 Universitaet Stuttgart