ASN AS31371 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS31371?

AS31371 is listed under Wissenschaftsladen Dortmund 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.

AS31371 Wissenschaftsladen Dortmund e.V.

ASN Lookup Tool

Wissenschaftsladen Dortmund e.V. xs4free.net

DE 3 Routes

AS Data

AS31371

AS31371 – Wissenschaftsladen Dortmund e.V.

AS Number	31371
AS Name	WISSENSCHAFTSLADEN-AS
Organization	Wissenschaftsladen Dortmund e.V. (org-wa21-ripe)
Country	DE
Website	xs4free.net
Number of IPv4 Routes	2
Number of IPv6 Routes	1
ASN type	NON-PROFIT
Allocation Status	ASSIGNED
Registry	RIPE
Date Allocated	2004-04-27

ASN Intelligence API for production workflows

Use ASN data for AS31371 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
91.204.7.0/24	AS31371	Wissenschaftsladen Dortmund e.V.	Wissenschaftsladen Dortmund e.V.	256
91.204.4.0/22	AS31371	Wissenschaftsladen Dortmund e.V.	Wissenschaftsladen Dortmund e.V.	1024
2001:678:98c::/48	AS31371	Wissenschaftsladen Dortmund e.V.	Wissenschaftsladen Dortmund e.V.	~1×10²⁴

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 'AS31246 - AS31618'

as-block:       AS31246 - AS31618
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:        2018-11-22T15:27:33Z
last-modified:  2018-11-22T15:27:33Z
source:         RIPE

% Information related to 'AS31371'

% Abuse contact for 'AS31371' is 'abuse@xs4free.net'

aut-num:        AS31371
as-name:        WISSENSCHAFTSLADEN-AS
descr:          Germany
remarks:        -------------------------------------------
remarks:        Versatel
mp-import:      afi any.unicast from AS8881 accept ANY
mp-export:      afi any.unicast to AS8881 announce AS-FREE
remarks:        -------------------------------------------
remarks:        LWLcom
mp-import:      afi any.unicast from AS50629 accept ANY
mp-export:      afi any.unicast to AS50629 announce AS-FREE
remarks:        -------------------------------------------
remarks:        DURCHDIELUFT
mp-import:      afi any.unicast from AS35675 accept AS-DURCHDIELUFT
mp-export:      afi any.unicast to AS35675 announce ANY
remarks:        -------------------------------------------
remarks:        CTDO
mp-import:      afi any.unicast from AS197782 accept AS197782
mp-export:      afi any.unicast to AS197782 announce ANY
remarks:        -------------------------------------------
org:            ORG-WA21-RIPE
sponsoring-org: ORG-WCG4-RIPE
admin-c:        FREE1-RIPE
tech-c:         FREE1-RIPE
abuse-c:        AC29979-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         FREE-MNT
mnt-by:         FAUL-MNT
created:        2004-04-27T11:07:26Z
last-modified:  2025-09-03T11:09:10Z
source:         RIPE # Filtered

organisation:   ORG-WA21-RIPE
org-name:       Wissenschaftsladen Dortmund e.V.
country:        DE
org-type:       OTHER
descr:          <http://www.wissenschaftsladen-dortmund.de/>
address:        Wissenschaftsladen Dortmund e.V.
address:        Braunschweiger Str. 22
address:        D-44145 Dortmund
address:        Germany
phone:          +49 231 8404660
phone:          +49 231 8630100
phone:          +49 231 8630106
fax-no:         +49 231 8630101
admin-c:        JJ36-RIPE
tech-c:         FREE1-RIPE
abuse-c:        AC29979-RIPE
mnt-ref:        FREE-MNT
mnt-ref:        FAUL-MNT
mnt-ref:        IACD-MNT
mnt-by:         FREE-MNT
created:        2004-04-26T14:10:35Z
last-modified:  2022-12-01T16:58:48Z
source:         RIPE # Filtered

role:           XS4FREE Administration
address:        Braunschweiger Str. 22
address:        D-44145 Dortmund
address:        Germany
phone:          +49-231-8390866
phone:          +49-231-8404660
phone:          +49-231-8404662
fax-no:         +49-231-8404661
remarks:        trouble:      calls to +49-231-8404662 will be recorded and
remarks:        trouble:      automatically forwarded to technicians
admin-c:        JJ36-RIPE
tech-c:         JJ36-RIPE
tech-c:         FAUL-RIPE
nic-hdl:        FREE1-RIPE
mnt-by:         FREE-MNT
mnt-by:         FAUL-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2011-07-05T17:13:33Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.121.2 (SHETLAND)

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.ripe.net",
  "as_blocks" : [ {
    "as_block" : "AS31246 - AS31618",
    "description" : [ "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" ],
    "date_created" : "2018-11-22",
    "date_updated" : "2018-11-22",
    "source" : "RIPE"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS31371",
    "as_name" : "WISSENSCHAFTSLADEN-AS",
    "description" : [ "Germany" ],
    "status" : "ASSIGNED",
    "mp_import" : [ "afi any.unicast from AS8881 accept ANY", "afi any.unicast from AS50629 accept ANY", "afi any.unicast from AS35675 accept AS-DURCHDIELUFT", "afi any.unicast from AS197782 accept AS197782" ],
    "mp_export" : [ "afi any.unicast to AS8881 announce AS-FREE", "afi any.unicast to AS50629 announce AS-FREE", "afi any.unicast to AS35675 announce ANY", "afi any.unicast to AS197782 announce ANY" ],
    "organization" : "ORG-WA21-RIPE",
    "sponsoring_organization" : "ORG-WCG4-RIPE",
    "admin_contacts" : [ "FREE1-RIPE" ],
    "tech_contacts" : [ "FREE1-RIPE" ],
    "abuse_contacts" : [ "AC29979-RIPE" ],
    "remarks" : [ "-------------------------------------------", "Versatel", "-------------------------------------------", "LWLcom", "-------------------------------------------", "DURCHDIELUFT", "-------------------------------------------", "CTDO", "-------------------------------------------" ],
    "mnt_by" : [ "RIPE-NCC-END-MNT", "FREE-MNT", "FAUL-MNT" ],
    "date_created" : "2004-04-27",
    "date_updated" : "2025-09-03",
    "source" : "RIPE"
  } ],
  "organization" : {
    "handle" : "ORG-WA21-RIPE",
    "name" : "Wissenschaftsladen Dortmund e.V.",
    "type" : "OTHER",
    "description" : [ "<http://www.wissenschaftsladen-dortmund.de/>" ],
    "address" : [ "Wissenschaftsladen Dortmund e.V.", "Braunschweiger Str. 22", "D-44145 Dortmund", "Germany" ],
    "street" : "Braunschweiger Str.",
    "city" : "Dortmund",
    "zip_code" : "D-44145",
    "country" : [ "DE" ],
    "phone" : [ "+49 231 8404660", "+49 231 8630100", "+49 231 8630106" ],
    "fax_no" : [ "+49 231 8630101" ],
    "admin_contacts" : [ "JJ36-RIPE" ],
    "tech_contacts" : [ "FREE1-RIPE" ],
    "abuse_contacts" : [ "AC29979-RIPE" ],
    "mnt_ref" : [ "FREE-MNT", "FAUL-MNT", "IACD-MNT" ],
    "mnt_by" : [ "FREE-MNT" ],
    "date_created" : "2004-04-26",
    "date_updated" : "2022-12-01",
    "source" : "RIPE",
    "addressCountry" : "GERMANY"
  },
  "administrative_contacts" : [ {
    "handle" : "FREE1-RIPE",
    "name" : "XS4FREE Administration",
    "address" : [ "Braunschweiger Str. 22", "D-44145 Dortmund", "Germany" ],
    "street" : "Braunschweiger Str.",
    "city" : "Dortmund",
    "zip_code" : "D-44145",
    "country" : "GERMANY",
    "phone" : [ "+49-231-8390866", "+49-231-8404660", "+49-231-8404662" ],
    "fax_no" : [ "+49-231-8404661" ],
    "admin_contacts" : [ "JJ36-RIPE" ],
    "tech_contacts" : [ "JJ36-RIPE", "FAUL-RIPE" ],
    "remarks" : [ "trouble:      calls to +49-231-8404662 will be recorded and", "trouble:      automatically forwarded to technicians" ],
    "mnt_by" : [ "FREE-MNT", "FAUL-MNT" ],
    "date_created" : "1970-01-01",
    "date_updated" : "2011-07-05",
    "source" : "RIPE",
    "addressCountry" : "GERMANY"
  } ],
  "technical_contacts" : [ {
    "handle" : "FREE1-RIPE",
    "name" : "XS4FREE Administration",
    "address" : [ "Braunschweiger Str. 22", "D-44145 Dortmund", "Germany" ],
    "street" : "Braunschweiger Str.",
    "city" : "Dortmund",
    "zip_code" : "D-44145",
    "country" : "GERMANY",
    "phone" : [ "+49-231-8390866", "+49-231-8404660", "+49-231-8404662" ],
    "fax_no" : [ "+49-231-8404661" ],
    "admin_contacts" : [ "JJ36-RIPE" ],
    "tech_contacts" : [ "JJ36-RIPE", "FAUL-RIPE" ],
    "remarks" : [ "trouble:      calls to +49-231-8404662 will be recorded and", "trouble:      automatically forwarded to technicians" ],
    "mnt_by" : [ "FREE-MNT", "FAUL-MNT" ],
    "date_created" : "1970-01-01",
    "date_updated" : "2011-07-05",
    "source" : "RIPE",
    "addressCountry" : "GERMANY"
  } ]
}

Peers

AS Number	Description	Country
AS197782	Chaostreff Dortmund e.V.	DE
AS35675	Wissenschaftsladen Dortmund e.V.	DE
AS50629	LWLcom GmbH	DE
AS8881	1&1 Versatel GmbH	DE

Upstreams

AS Number	Description	Country
AS50629	LWLcom GmbH	DE
AS8881	1&1 Versatel GmbH	DE

Downstreams

AS Number	Description	Country
AS35675	Wissenschaftsladen Dortmund e.V.	DE