ASN AS51839 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS51839?

AS51839 is listed under qSkills GmbH & Co. KG.

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.

AS51839 qSkills GmbH & Co. KG

ASN Lookup Tool

qSkills GmbH & Co. KG proact.de

DE 2 Routes

AS Data

AS51839

AS51839 – qSkills GmbH & Co. KG

AS Number	51839
AS Name	QSKILLS
Organization	qSkills GmbH & Co. KG (org-qgck1-ripe)
Country	DE
Website	proact.de
Number of IPv4 Routes	1
Number of IPv6 Routes	1
ASN type	BUSINESS
Allocation Status	ASSIGNED
Registry	RIPE
Date Allocated	2010-11-12

ASN Intelligence API for production workflows

Use ASN data for AS51839 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
91.221.104.0/23	AS51839	qSkills GmbH & Co. KG	qSkills GmbH & Co. KG	512
2001:67c:3a8::/48	AS51839	qSkills GmbH & Co. KG	qSkills GmbH & Co. KG	~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 'AS51819 - AS51843'

as-block:       AS51819 - AS51843
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:        2026-02-02T15:31:00Z
last-modified:  2026-02-02T15:31:00Z
source:         RIPE

% Information related to 'AS51839'

% Abuse contact for 'AS51839' is 'abuse@core-backbone.com'

aut-num:        AS51839
as-name:        QSKILLS
org:            ORG-qGCK1-RIPE
import:         from AS33891 accept   ANY
export:         to   AS33891 announce AS51839
import:         from AS33988 accept   ANY
export:         to   AS33988 announce AS51839
admin-c:        KJJ-RIPE
tech-c:         TNM-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         QSKILLS-MNT
created:        2010-11-12T16:02:01Z
last-modified:  2018-09-04T10:55:56Z
source:         RIPE
sponsoring-org: ORG-IICG1-RIPE

organisation:   ORG-qGCK1-RIPE
org-name:       qSkills GmbH & Co. KG
country:        DE
org-type:       OTHER
address:        Suedwestpark 65
address:        90459 Nuernberg
phone:          +49 911 80 10 3 - 0
fax-no:         +49 911 80 10 3 - 39
abuse-c:        AR23568-RIPE
admin-c:        KJJ-RIPE
tech-c:         TNM-RIPE
mnt-ref:        QSKILLS-MNT
mnt-by:         QSKILLS-MNT
created:        2010-08-13T08:46:30Z
last-modified:  2022-12-01T16:44:34Z
source:         RIPE # Filtered

role:           Proact Deutschland GmbH Netmaster
address:        Proact Deutschland GmbH
address:        Suedwestpark 43
address:        90449 Nuernberg
address:        Germany
phone:          +49 911 30999-0
fax-no:         +49 911 30999-99
org:            ORG-PDG9-RIPE
remarks:        <https://proact.de>
remarks:        Networks: Carrier & ISP Consulting, Network Design,
remarks:        N-IX: the Nueremberg Internet eXchange www.n-ix.net
remarks:        OpenSource: Linux Consulting, Linux Migration, OpenSource Projects
remarks:        Training: We teach everything we do!
tech-c:         RICO-RIPE
tech-c:         CS-DE
nic-hdl:        TNM-RIPE
mnt-by:         PROACTDE
mnt-by:         PROACTDE
created:        2003-06-23T09:55:43Z
last-modified:  2025-11-03T14:06:46Z
source:         RIPE # Filtered
abuse-mailbox:  abuse@proact.de

person:         Kurt-Juergen Jacobs
address:        qSkills GmbH & Co KG
address:        Suedwestpark 65
address:        90449 Nuernberg
phone:          +49 911 80 10 3-0
fax-no:         +49 911 80 10 3-39
nic-hdl:        KJJ-RIPE
mnt-by:         QSKILLS-MNT
created:        2010-08-13T08:33:52Z
last-modified:  2017-10-30T22:10:30Z
source:         RIPE # Filtered

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

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.ripe.net",
  "as_blocks" : [ {
    "as_block" : "AS51819 - AS51843",
    "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" : "2026-02-02",
    "date_updated" : "2026-02-02",
    "source" : "RIPE"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS51839",
    "as_name" : "QSKILLS",
    "status" : "ASSIGNED",
    "import" : [ "from AS33891 accept   ANY", "from AS33988 accept   ANY" ],
    "export" : [ "to   AS33891 announce AS51839", "to   AS33988 announce AS51839" ],
    "organization" : "ORG-qGCK1-RIPE",
    "sponsoring_organization" : "ORG-IICG1-RIPE",
    "admin_contacts" : [ "KJJ-RIPE" ],
    "tech_contacts" : [ "TNM-RIPE" ],
    "mnt_by" : [ "RIPE-NCC-END-MNT", "QSKILLS-MNT" ],
    "date_created" : "2010-11-12",
    "date_updated" : "2018-09-04",
    "source" : "RIPE"
  } ],
  "organization" : {
    "handle" : "ORG-qGCK1-RIPE",
    "name" : "qSkills GmbH & Co. KG",
    "type" : "OTHER",
    "address" : [ "Suedwestpark 65", "90459 Nuernberg" ],
    "street" : "Suedwestpark",
    "city" : "Nuernberg",
    "zip_code" : "90459",
    "country" : [ "DE" ],
    "phone" : [ "+49 911 80 10 3 - 0" ],
    "fax_no" : [ "+49 911 80 10 3 - 39" ],
    "admin_contacts" : [ "KJJ-RIPE" ],
    "tech_contacts" : [ "TNM-RIPE" ],
    "abuse_contacts" : [ "AR23568-RIPE" ],
    "mnt_ref" : [ "QSKILLS-MNT" ],
    "mnt_by" : [ "QSKILLS-MNT" ],
    "date_created" : "2010-08-13",
    "date_updated" : "2022-12-01",
    "source" : "RIPE"
  },
  "administrative_contacts" : [ {
    "handle" : "KJJ-RIPE",
    "name" : "Kurt-Juergen Jacobs",
    "address" : [ "qSkills GmbH & Co KG", "Suedwestpark 65", "90449 Nuernberg" ],
    "street" : "Suedwestpark",
    "city" : "Nuernberg",
    "zip_code" : "90449",
    "phone" : [ "+49 911 80 10 3-0" ],
    "fax_no" : [ "+49 911 80 10 3-39" ],
    "mnt_by" : [ "QSKILLS-MNT" ],
    "date_created" : "2010-08-13",
    "date_updated" : "2017-10-30",
    "source" : "RIPE"
  } ],
  "technical_contacts" : [ {
    "handle" : "TNM-RIPE",
    "name" : "Proact Deutschland GmbH Netmaster",
    "address" : [ "Proact Deutschland GmbH", "Suedwestpark 43", "90449 Nuernberg", "Germany" ],
    "street" : "Suedwestpark",
    "city" : "Nuernberg",
    "zip_code" : "90449",
    "country" : "GERMANY",
    "abuse_mailbox" : [ "abuse@proact.de" ],
    "phone" : [ "+49 911 30999-0" ],
    "fax_no" : [ "+49 911 30999-99" ],
    "organizations" : [ "ORG-PDG9-RIPE" ],
    "tech_contacts" : [ "RICO-RIPE", "CS-DE" ],
    "remarks" : [ "<https://proact.de>", "Networks: Carrier & ISP Consulting, Network Design,", "N-IX: the Nueremberg Internet eXchange www.n-ix.net", "OpenSource: Linux Consulting, Linux Migration, OpenSource Projects", "Training: We teach everything we do!" ],
    "mnt_by" : [ "PROACTDE", "PROACTDE" ],
    "date_created" : "2003-06-23",
    "date_updated" : "2025-11-03",
    "source" : "RIPE",
    "addressCountry" : "GERMANY"
  } ]
}

Peers

AS Number	Description	Country
AS8767	M net Telekommunikations GmbH	DE
AS8767	M-net Telekommunikations GmbH	DE
AS47147	Anexia Cloud Solutions GmbH	AT
AS33891	Core-Backbone GmbH	DE
AS47147	ANEXIA Internetdienstleistungs GmbH	AT
AS33988	Proact Deutschland GmbH	DE
AS33891	Core Backbone GmbH	DE

Upstreams

AS Number	Description	Country
AS8767	M net Telekommunikations GmbH	DE
AS33891	Core Backbone GmbH	DE