asn.dev

Autonomous system

AS25538 IN-ULM

Unclassified RIPE Non-Profit

IPv4 addresses 5.38K 3 prefixes
IPv6 prefixes 16 counted as prefixes, not addresses
Countries 1 mostly DE
Exchanges 0 recorded by PCH
Upstreams 3 1 downstream
Flagged prefixes 0 none

Summary

Internet Ulm/Neu-Ulm e.V.

Germany · AI-generated

non-profit regional residential germany

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. Source, and how to suggest an edit.

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

3 upstream, 1 downstream and 7 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS48284SWU TeleNet GmbH199
AS41051Openfactory GmbH12
AS6939Hurricane Electric LLC5

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 3 prefixes · 5.38K addresses IPv6 16 prefixes

CountryNamePrefixes
DEGermany19

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS25538
Registry name
IN-ULM
Registrant
BN-ULM
Abuse contact
abuse@in-ulm.de
Registered
2002-12-27
Last changed
2026-09-10
Allocation
allocated

Declared

PeeringDB profile

self-reported
Name
Internet Ulm/Neu-Ulm e.V.
Also known as
IN-ULM
Network type
Non-Profit
Scope
Europe
Traffic ratio
Mostly Inbound
Peering policy
Open
Website
http://www.in-ulm.de/

PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 4 valid, 0 with no ROA
ROAs
5 authorising AS25538
ASPA
4 declared providers
IRR
100% registered · 4 of 4 announcements
Route objects
5 naming AS25538

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

No DROP prefixes None of its announced space is on the DROP prefix list.

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,771 prefixes, as published 2026-10-15. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.

FBI IC3

No IC3 indicators Nothing from the FBI IC3 feed.

IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check