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AS21458 KfW Kreditanstalt fur Wiederaufbau

Q: Why is WHOIS data shown for an ASN?

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

ASN Lookup Tool

KfW Kreditanstalt fur Wiederaufbau kfw.de

DE 1 Routes

AS Data

AS21458

AS21458 – KfW Kreditanstalt fur Wiederaufbau

AS Number	21458
AS Name	KFW-AS
Organization	KfW Kreditanstalt fur Wiederaufbau (org-kkfw1-ripe)
Country	DE
Website	kfw.de
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	GOVERNMENT
Allocation Status	ASSIGNED
Registry	RIPE
Date Allocated	2004-01-16

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Use ASN data for AS21458 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
193.30.140.0/24	AS21458	KfW Kreditanstalt fur Wiederaufbau	KfW Kreditanstalt fur Wiederaufbau	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 'AS21453 - AS21503'

as-block:       AS21453 - AS21503
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:        2018-11-22T15:27:28Z
last-modified:  2018-11-22T15:27:28Z
source:         RIPE

% Information related to 'AS21458'

% Abuse contact for 'AS21458' is 'abuse@kfw.de'

aut-num:        AS21458
as-name:        KFW-AS
org:            ORG-KKFW1-RIPE
import:         from AS8220 action pref=100; accept ANY
import:         from AS3320 action pref=100; accept ANY
import:         from AS8881 accept any
export:         to AS8220 announce AS21458
export:         to AS3320 announce AS21458
export:         to AS8881 announce AS21458
admin-c:        MG16101-RIPE
tech-c:         MG16101-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         VT-ENGI-MNT
created:        2004-01-16T13:27:25Z
last-modified:  2025-08-19T15:39:46Z
source:         RIPE
sponsoring-org: ORG-KG4-RIPE

organisation:   ORG-KKFW1-RIPE
org-name:       KfW Kreditanstalt fur Wiederaufbau
country:        DE
org-type:       Other
address:        Frankfurt/ Main, GERMANY
abuse-c:        AR79794-RIPE
mnt-by:         VT-ENGI-MNT
mnt-ref:        VT-ENGI-MNT
created:        2013-01-30T09:02:01Z
last-modified:  2026-03-19T11:05:59Z
source:         RIPE # Filtered

person:         Michael Grosch
address:        Kreditanstalt fuer Wiederaufbau
address:        Palmengartenstrasse 5-9
address:        D-60325 Frankfurt/ Main
address:        Germany
phone:          +49 69 7431 346
fax-no:         +49 69 7431 2944
nic-hdl:        MG16101-RIPE
mnt-by:         VT-DOMAIN-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2022-03-28T06:33:36Z
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" : "AS21453 - AS21503",
    "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" : "AS21458",
    "as_name" : "KFW-AS",
    "status" : "ASSIGNED",
    "import" : [ "from AS8220 action pref=100; accept ANY", "from AS3320 action pref=100; accept ANY", "from AS8881 accept any" ],
    "export" : [ "to AS8220 announce AS21458", "to AS3320 announce AS21458", "to AS8881 announce AS21458" ],
    "organization" : "ORG-KKFW1-RIPE",
    "sponsoring_organization" : "ORG-KG4-RIPE",
    "admin_contacts" : [ "MG16101-RIPE" ],
    "tech_contacts" : [ "MG16101-RIPE" ],
    "mnt_by" : [ "RIPE-NCC-END-MNT", "VT-ENGI-MNT" ],
    "date_created" : "2004-01-16",
    "date_updated" : "2025-08-19",
    "source" : "RIPE"
  } ],
  "organization" : {
    "handle" : "ORG-KKFW1-RIPE",
    "name" : "KfW Kreditanstalt fur Wiederaufbau",
    "type" : "Other",
    "address" : [ "Frankfurt/ Main, GERMANY" ],
    "city" : "Frankfurt/ Main",
    "country" : [ "DE" ],
    "abuse_contacts" : [ "AR79794-RIPE" ],
    "mnt_ref" : [ "VT-ENGI-MNT" ],
    "mnt_by" : [ "VT-ENGI-MNT" ],
    "date_created" : "2013-01-30",
    "date_updated" : "2026-03-19",
    "source" : "RIPE",
    "addressCountry" : "GERMANY"
  },
  "administrative_contacts" : [ {
    "handle" : "MG16101-RIPE",
    "name" : "Michael Grosch",
    "address" : [ "Kreditanstalt fuer Wiederaufbau", "Palmengartenstrasse 5-9", "D-60325 Frankfurt/ Main", "Germany" ],
    "street" : "Palmengartenstrasse",
    "city" : "Frankfurt/ Main",
    "zip_code" : "D-60325",
    "country" : "GERMANY",
    "phone" : [ "+49 69 7431 346" ],
    "fax_no" : [ "+49 69 7431 2944" ],
    "mnt_by" : [ "VT-DOMAIN-MNT" ],
    "date_created" : "1970-01-01",
    "date_updated" : "2022-03-28",
    "source" : "RIPE",
    "addressCountry" : "GERMANY"
  } ],
  "technical_contacts" : [ {
    "handle" : "MG16101-RIPE",
    "name" : "Michael Grosch",
    "address" : [ "Kreditanstalt fuer Wiederaufbau", "Palmengartenstrasse 5-9", "D-60325 Frankfurt/ Main", "Germany" ],
    "street" : "Palmengartenstrasse",
    "city" : "Frankfurt/ Main",
    "zip_code" : "D-60325",
    "country" : "GERMANY",
    "phone" : [ "+49 69 7431 346" ],
    "fax_no" : [ "+49 69 7431 2944" ],
    "mnt_by" : [ "VT-DOMAIN-MNT" ],
    "date_created" : "1970-01-01",
    "date_updated" : "2022-03-28",
    "source" : "RIPE",
    "addressCountry" : "GERMANY"
  } ]
}

Peers

AS Number	Description	Country
AS8220	COLT Technology Services Group Limited	GB
AS3320	Deutsche Telekom AG	DE
AS8881	1&1 Versatel GmbH	DE

Upstreams

AS Number	Description	Country
AS8881	1&1 Versatel GmbH	DE

Frequently Asked Questions

What is ASN AS21458?

ASN AS21458 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS21458?

AS21458 is listed under KfW Kreditanstalt fur Wiederaufbau.

What do peers, upstreams, and downstreams mean?

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 included here?

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

How can I access full ASN table data?

This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.