ASN AS21234 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS21234?

AS21234 is listed under GRENKE Service 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.

AS21234 GRENKE Service GmbH | IPGeolocation.io

ASN Lookup Tool

GRENKE Service GmbH grenke.de

DE 2 Routes

AS Data

AS21234

AS21234 – GRENKE Service GmbH

AS Number	21234
AS Name	GRENKE
Organization	GRENKE Service GmbH (org-ha1-ripe)
Country	DE
Website	grenke.de
Number of IPv4 Routes	1
Number of IPv6 Routes	1
ASN type	BUSINESS
Allocation Status	ASSIGNED
Registry	RIPE
Date Allocated	2002-09-20

ASN Intelligence API for production workflows

Use ASN data for AS21234 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
217.25.128.0/20	AS21234	GRENKE Service GmbH	Small Business IT Leasing	4096
2a07:fbc0::/32	AS21234	GRENKE Service GmbH	GRENKE	~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 'AS21153 - AS21241'

as-block:       AS21153 - AS21241
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:        2018-11-22T15:27:27Z
last-modified:  2018-11-22T15:27:27Z
source:         RIPE

% Information related to 'AS21234'

% Abuse contact for 'AS21234' is 'T-G-DE-IT-SERVICES-NETWORK@grenke.de'

aut-num:        AS21234
as-name:        GRENKE
import:         from AS3320 action pref=50; accept ANY
import:         from AS13237 action pref=100; accept ANY
import:         from AS8220 accept ANY
import:         from AS19905 accept ANY
export:         to AS3320 announce AS21234
export:         to AS13237 announce AS21234
export:         to AS8220 announce AS21234
export:         to AS19905 announce AS21234
org:            ORG-hA1-RIPE
admin-c:        IIM30-RIPE
tech-c:         IIM30-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         JLUTTE-MNT
mnt-by:         DMAYER-MNT
created:        2002-09-20T15:45:12Z
last-modified:  2024-01-09T13:27:50Z
source:         RIPE

organisation:   ORG-hA1-RIPE
org-name:       GRENKE Service GmbH
country:        DE
org-type:       LIR
address:        Neuer Markt 2
address:        76532
address:        Baden-Baden
address:        GERMANY
phone:          +49 7221 5007 8604
fax-no:         +49 7221 5007 4666
abuse-c:        AR14588-RIPE
admin-c:        IIM30-RIPE
tech-c:         IIM30-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        DMAYER-MNT
mnt-ref:        JLUTTE-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         DMAYER-MNT
created:        2004-04-17T11:07:48Z
last-modified:  2024-01-09T13:01:15Z
source:         RIPE # Filtered

role:           IT Infrastructure Management
address:        Neuer Markt 2
address:        76532 Baden-baden
phone:          +49 7221 5007 8604
admin-c:        DM1194-RIPE
nic-hdl:        IIM30-RIPE
mnt-by:         NSHARABATI-MNT
mnt-by:         JLUTTE-MNT
mnt-by:         DMAYER-MNT
created:        2022-12-23T16:12:54Z
last-modified:  2022-12-23T16:36:16Z
source:         RIPE # Filtered

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

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.ripe.net",
  "as_blocks" : [ {
    "as_block" : "AS21153 - AS21241",
    "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" : "AS21234",
    "as_name" : "GRENKE",
    "status" : "ASSIGNED",
    "import" : [ "from AS3320 action pref=50; accept ANY", "from AS13237 action pref=100; accept ANY", "from AS8220 accept ANY", "from AS19905 accept ANY" ],
    "export" : [ "to AS3320 announce AS21234", "to AS13237 announce AS21234", "to AS8220 announce AS21234", "to AS19905 announce AS21234" ],
    "organization" : "ORG-hA1-RIPE",
    "admin_contacts" : [ "IIM30-RIPE" ],
    "tech_contacts" : [ "IIM30-RIPE" ],
    "mnt_by" : [ "RIPE-NCC-END-MNT", "JLUTTE-MNT", "DMAYER-MNT" ],
    "date_created" : "2002-09-20",
    "date_updated" : "2024-01-09",
    "source" : "RIPE"
  } ],
  "organization" : {
    "handle" : "ORG-hA1-RIPE",
    "name" : "GRENKE Service GmbH",
    "type" : "LIR",
    "address" : [ "Neuer Markt 2", "76532", "Baden-Baden", "GERMANY" ],
    "street" : "Neuer Markt",
    "city" : "Baden-baden",
    "zip_code" : "76532",
    "country" : [ "DE" ],
    "phone" : [ "+49 7221 5007 8604" ],
    "fax_no" : [ "+49 7221 5007 4666" ],
    "admin_contacts" : [ "IIM30-RIPE" ],
    "tech_contacts" : [ "IIM30-RIPE" ],
    "abuse_contacts" : [ "AR14588-RIPE" ],
    "mnt_ref" : [ "RIPE-NCC-HM-MNT", "DMAYER-MNT", "JLUTTE-MNT" ],
    "mnt_by" : [ "RIPE-NCC-HM-MNT", "DMAYER-MNT" ],
    "date_created" : "2004-04-17",
    "date_updated" : "2024-01-09",
    "source" : "RIPE",
    "addressCountry" : "GERMANY"
  },
  "administrative_contacts" : [ {
    "handle" : "IIM30-RIPE",
    "name" : "IT Infrastructure Management",
    "address" : [ "Neuer Markt 2", "76532 Baden-baden" ],
    "street" : "Neuer Markt",
    "city" : "Baden-baden",
    "zip_code" : "76532",
    "phone" : [ "+49 7221 5007 8604" ],
    "admin_contacts" : [ "DM1194-RIPE" ],
    "mnt_by" : [ "NSHARABATI-MNT", "JLUTTE-MNT", "DMAYER-MNT" ],
    "date_created" : "2022-12-23",
    "date_updated" : "2022-12-23",
    "source" : "RIPE"
  } ],
  "technical_contacts" : [ {
    "handle" : "IIM30-RIPE",
    "name" : "IT Infrastructure Management",
    "address" : [ "Neuer Markt 2", "76532 Baden-baden" ],
    "street" : "Neuer Markt",
    "city" : "Baden-baden",
    "zip_code" : "76532",
    "phone" : [ "+49 7221 5007 8604" ],
    "admin_contacts" : [ "DM1194-RIPE" ],
    "mnt_by" : [ "NSHARABATI-MNT", "JLUTTE-MNT", "DMAYER-MNT" ],
    "date_created" : "2022-12-23",
    "date_updated" : "2022-12-23",
    "source" : "RIPE"
  } ]
}

Peers

AS Number	Description	Country
AS8220	COLT Technology Services Group Limited	GB
AS13237	euNetworks GmbH	DE
AS3320	Deutsche Telekom AG	DE
AS12843	TelemaxX Telekommunikation GmbH	DE
AS19905	Vercara, LLC	US

Upstreams

AS Number	Description	Country
AS12843	TelemaxX Telekommunikation GmbH	DE