ASN AS25538 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS25538?

AS25538 is listed under Internet Ulm/Neu Ulm e.V..

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS25538 Internet Ulm/Neu Ulm e.V.

ASN Lookup Tool

Internet Ulm/Neu Ulm e.V. in-ulm.de

DE 4 Routes

AS Data

AS25538

AS25538 – Internet Ulm/Neu Ulm e.V.

AS Number	25538
AS Name	IN-ULM
Organization	Internet Ulm/Neu Ulm e.V.(org-iuen1-ripe)
Country	DE
Website	in-ulm.de
Number of IPv4 Routes	3
Number of IPv6 Routes	1
ASN type	ISP
Allocation Status	ASSIGNED
Registry	RIPE
Date Allocated	2002-12-27

ASN Intelligence API for production workflows

Use ASN data for AS25538 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
193.110.90.0/24	AS25538	Internet Ulm/Neu Ulm e.V.	Internet Ulm/Neu Ulm e.V.	256
217.10.0.0/20	AS25538	Internet Ulm/Neu Ulm e.V.	Homeing Netz	4096
91.210.72.0/22	AS25538	Internet Ulm/Neu Ulm e.V.	Internet Ulm/Neu Ulm e.V.	1024
2001:1410::/32	AS25538	Internet Ulm/Neu Ulm e.V.	Internet Ulm/Neu Ulm e.V.	~79×10²⁷

Raw Whois Response

% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://docs.db.ripe.net/terms-conditions.html

% Note: this output has been filtered.
%       To receive output for a database update, use the "-B" flag.

% Information related to 'AS25365 - AS25542'

as-block:       AS25365 - AS25542
descr:          RIPE NCC ASN block
remarks:        These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by:         RIPE-NCC-HM-MNT
created:        2018-11-22T15:27:30Z
last-modified:  2018-11-22T15:27:30Z
source:         RIPE

% Information related to 'AS25538'

% Abuse contact for 'AS25538' is 'abuse@in-ulm.de'

aut-num:        AS25538
as-name:        IN-ULM
org:            ORG-IUen1-RIPE
remarks:        network of IN-ULM e.V.
remarks:        IN-Ulm e.V. is a non commercial ISP for the region of Ulm/DE
admin-c:        RK10381-RIPE
tech-c:         AFB13-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
import:         from AS48284 accept ANY
import:         from AS6939 accept ANY
import:         from AS41051 accept ANY
import:         from AS553 accept AS-BELWUE
export:         to AS48284 announce AS25538
export:         to AS553 announce AS25538
export:         to AS6939 announce AS25538
export:         to AS41051 announce AS25538
mnt-by:         BN-ULM
created:        2002-12-27T16:00:59Z
last-modified:  2021-01-28T20:18:51Z
source:         RIPE # Filtered

organisation:   ORG-IUen1-RIPE
org-name:       Internet Ulm/Neu-Ulm e.V.
country:        DE
org-type:       LIR
address:        M.-Dietrich-Str. 5
address:        89231
address:        Neu-Ulm
address:        GERMANY
phone:          +497319702510
fax-no:         +497319702511
admin-c:        VT100
admin-c:        RK10381-RIPE
admin-c:        PAUL3-RIPE
admin-c:        AFB13-RIPE
mnt-ref:        BN-ULM
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         BN-ULM
abuse-c:        IAC22-RIPE
created:        2004-04-17T11:06:55Z
last-modified:  2020-12-16T13:06:37Z
source:         RIPE # Filtered

person:         Andreas Franz Borchert
address:        Am Nohl 33
address:        89173 Lonsee, Germany
phone:          +49 7336 5896
nic-hdl:        AFB13-RIPE
mnt-by:         BN-ULM
created:        1970-01-01T00:00:00Z
last-modified:  2001-09-22T01:09:35Z
source:         RIPE # Filtered

person:         Raimund Konz
address:        Internet Ulm/Neu-Ulm eV
address:        Marlene-Dietrich-Str. 5
address:        DE 89231 Neu-Ulm
phone:          +49 731 97025-10
nic-hdl:        RK10381-RIPE
mnt-by:         RKO-MNT
created:        2018-09-08T13:10:18Z
last-modified:  2018-09-08T13:11:44Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.121.1 (DEXTER)

Parsed Whois Response

Peers

AS Number	Description	Country
AS48284	SWU TeleNet GmbH	DE
AS6939	Hurricane Electric LLC	US
AS553	BelWue Koordination	DE
AS553	Universitaet Stuttgart	DE
AS41051	FREETRANSIT Project	CH

Upstreams

AS Number	Description	Country
AS48284	SWU TeleNet GmbH	DE
AS6939	Hurricane Electric LLC	US
AS41051	FREETRANSIT Project	CH