ASN AS59845 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS59845?

AS59845 is listed under Top 21 Systemhaus GmbH.

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.

AS59845 Top 21 Systemhaus GmbH

ASN Lookup Tool

Top 21 Systemhaus GmbH top21.sh

DE 4 Routes

AS Data

AS59845

AS59845 – Top 21 Systemhaus GmbH

AS Number	59845
AS Name	TOP21SH-AS
Organization	Top 21 Systemhaus GmbH (org-tsg13-ripe)
Country	DE
Website	top21.sh
Number of IPv4 Routes	2
Number of IPv6 Routes	2
ASN type	BUSINESS
Allocation Status	ASSIGNED
Registry	RIPE
Date Allocated	2014-09-05

ASN Intelligence API for production workflows

Use ASN data for AS59845 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
2a00:9ae0:1::/48	AS59845	Top 21 Systemhaus GmbH	Top 21 Systemhaus GmbH	~1×10²⁴
2a00:9ae0::/48	AS59845	Top 21 Systemhaus GmbH	Top 21 Systemhaus GmbH	~1×10²⁴
185.28.97.0/24	AS59845	Top 21 Systemhaus GmbH	Top 21 Systemhaus GmbH	256
185.28.96.0/24	AS59845	Top 21 Systemhaus GmbH	Top 21 Systemhaus GmbH	256

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 'AS59392 - AS60437'

as-block:       AS59392 - AS60437
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:        2024-09-03T13:31:09Z
last-modified:  2024-09-03T13:31:09Z
source:         RIPE

% Information related to 'AS59845'

% Abuse contact for 'AS59845' is 'abuse@top21.sh'

aut-num:        AS59845
as-name:        TOP21SH-AS
org:            ORG-TSG13-RIPE
import:         from AS8881 accept ANY
export:         to AS8881 announce AS59845
import:         from AS8220 accept ANY
export:         to AS8220 announce AS59845
admin-c:        FL3124-RIPE
tech-c:         FOS4-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         TOP21SH-MNT
created:        2014-09-05T09:41:38Z
last-modified:  2018-09-04T11:28:36Z
source:         RIPE

organisation:   ORG-TSG13-RIPE
org-name:       Top 21 Systemhaus GmbH
country:        DE
org-type:       LIR
address:        Waiblinger Stra�e 11
address:        70372
address:        Stuttgart
address:        GERMANY
phone:          +497112172520
fax-no:         +4971121725299
admin-c:        OW530-RIPE
admin-c:        FOS4-RIPE
admin-c:        TM2768-RIPE
admin-c:        FL3124-RIPE
abuse-c:        HOTD36-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        TOP21SH-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         TOP21SH-MNT
created:        2013-05-21T12:54:29Z
last-modified:  2026-02-06T15:54:43Z
source:         RIPE # Filtered

person:         Frank Laich
address:        Top 21 Systemhaus GmbH
address:        Waiblinger Strasse 11
address:        70372 Stuttgart
address:        Germany
phone:          +49 711 217252 21
fax-no:         +49 711 217252 99
nic-hdl:        FL3124-RIPE
mnt-by:         TOP21SH-MNT
created:        2007-04-16T10:02:11Z
last-modified:  2026-02-26T08:51:17Z
source:         RIPE # Filtered

person:         Frank O Schaefer
address:        Top 21 Systemhaus GmbH
address:        Waiblinger Strasse 11
address:        70372 Stuttgart
phone:          +49 711 217252 24
fax-no:         +49 711 217252 99
nic-hdl:        FOS4-RIPE
mnt-by:         DE-COLT-MNT
mnt-by:         TOP21SH-MNT
created:        2008-01-16T12:12:58Z
last-modified:  2026-02-26T08:50:34Z
source:         RIPE # Filtered

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

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.ripe.net",
  "as_blocks" : [ {
    "as_block" : "AS59392 - AS60437",
    "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" : "2024-09-03",
    "date_updated" : "2024-09-03",
    "source" : "RIPE"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS59845",
    "as_name" : "TOP21SH-AS",
    "status" : "ASSIGNED",
    "import" : [ "from AS8881 accept ANY", "from AS8220 accept ANY" ],
    "export" : [ "to AS8881 announce AS59845", "to AS8220 announce AS59845" ],
    "organization" : "ORG-TSG13-RIPE",
    "admin_contacts" : [ "FL3124-RIPE" ],
    "tech_contacts" : [ "FOS4-RIPE" ],
    "mnt_by" : [ "RIPE-NCC-END-MNT", "TOP21SH-MNT" ],
    "date_created" : "2014-09-05",
    "date_updated" : "2018-09-04",
    "source" : "RIPE"
  } ],
  "organization" : {
    "handle" : "ORG-TSG13-RIPE",
    "name" : "Top 21 Systemhaus GmbH",
    "type" : "LIR",
    "address" : [ "Waiblinger Stra?e 11", "70372", "Stuttgart", "GERMANY" ],
    "street" : "Stra?e",
    "city" : "Stuttgart",
    "zip_code" : "70372",
    "country" : [ "DE" ],
    "phone" : [ "+497112172520" ],
    "fax_no" : [ "+4971121725299" ],
    "admin_contacts" : [ "OW530-RIPE", "FOS4-RIPE", "TM2768-RIPE", "FL3124-RIPE" ],
    "abuse_contacts" : [ "HOTD36-RIPE" ],
    "mnt_ref" : [ "RIPE-NCC-HM-MNT", "TOP21SH-MNT" ],
    "mnt_by" : [ "RIPE-NCC-HM-MNT", "TOP21SH-MNT" ],
    "date_created" : "2013-05-21",
    "date_updated" : "2026-02-06",
    "source" : "RIPE",
    "addressCountry" : "GERMANY"
  },
  "administrative_contacts" : [ {
    "handle" : "FL3124-RIPE",
    "name" : "Frank Laich",
    "address" : [ "Top 21 Systemhaus GmbH", "Waiblinger Strasse 11", "70372 Stuttgart", "Germany" ],
    "street" : "Waiblinger Strasse",
    "city" : "Stuttgart",
    "zip_code" : "70372",
    "country" : "GERMANY",
    "phone" : [ "+49 711 217252 21" ],
    "fax_no" : [ "+49 711 217252 99" ],
    "mnt_by" : [ "TOP21SH-MNT" ],
    "date_created" : "2007-04-16",
    "date_updated" : "2026-02-26",
    "source" : "RIPE",
    "addressCountry" : "GERMANY"
  } ],
  "technical_contacts" : [ {
    "handle" : "FOS4-RIPE",
    "name" : "Frank O Schaefer",
    "address" : [ "Top 21 Systemhaus GmbH", "Waiblinger Strasse 11", "70372 Stuttgart" ],
    "street" : "Waiblinger Strasse",
    "city" : "Stuttgart",
    "zip_code" : "70372",
    "phone" : [ "+49 711 217252 24" ],
    "fax_no" : [ "+49 711 217252 99" ],
    "mnt_by" : [ "DE-COLT-MNT", "TOP21SH-MNT" ],
    "date_created" : "2008-01-16",
    "date_updated" : "2026-02-26",
    "source" : "RIPE"
  } ]
}

Peers

AS Number	Description	Country
AS8220	COLT Technology Services Group Limited	GB
AS8881	1&1 Versatel GmbH	DE

Upstreams

AS Number	Description	Country
AS8881	1&1 Versatel GmbH	DE