ASN AS25481 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS25481?

AS25481 is listed under SYCOR 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.

AS25481 SYCOR GmbH | IPGeolocation.io

ASN Lookup Tool

SYCOR GmbH sycor.de

DE 2 Routes

AS Data

AS25481

AS25481 – SYCOR GmbH

AS Number	25481
AS Name	SYCOR
Organization	SYCOR GmbH (org-sg113-ripe)
Country	DE
Website	sycor.de
Number of IPv4 Routes	2
Number of IPv6 Routes	0
ASN type	BUSINESS
Allocation Status	ASSIGNED
Registry	RIPE
Date Allocated	2002-12-05

ASN Intelligence API for production workflows

Use ASN data for AS25481 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
194.31.240.0/23	AS25481	SYCOR GmbH	SYCOR GmbH	512
194.59.132.0/22	AS25481	SYCOR GmbH	SYCOR GmbH	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 'AS25365 - AS25542'

as-block:       AS25365 - AS25542
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:        2018-11-22T15:27:30Z
last-modified:  2018-11-22T15:27:30Z
source:         RIPE

% Information related to 'AS25481'

% Abuse contact for 'AS25481' is 'abuse@sycor.de'

aut-num:        AS25481
as-name:        SYCOR
org:            ORG-SG113-RIPE
import:         from AS8472 action pref=190; accept ANY
import:         from AS702 action pref=205; accept ANY
import:         from AS3320 action pref=195; accept ANY
import:         from AS15830 action pref=195; accept ANY
export:         to AS8472 announce AS25481
export:         to AS702 announce AS25481
export:         to AS3320 announce AS25481
export:         to AS15830 announce AS25481
default:        to AS8472
remarks:        as for dual homed internet
admin-c:        MK2769-RIPE
admin-c:        SYMK1-RIPE
admin-c:        SYTA1-RIPE
admin-c:        SYRK1-RIPE
tech-c:         MK2769-RIPE
tech-c:         CL10711-RIPE
tech-c:         SYMK1-RIPE
abuse-c:        AR20276-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         SYCOR-MNT
created:        2002-12-05T15:45:54Z
last-modified:  2025-11-21T09:13:35Z
source:         RIPE # Filtered
sponsoring-org: ORG-DTA2-RIPE

organisation:   ORG-SG113-RIPE
org-type:       OTHER
org-name:       SYCOR GmbH
country:        DE
address:        Heinrich-von-Stephan-Str. 1-5
address:        D-37073 Goettingen
abuse-c:        AR20276-RIPE
mnt-ref:        DTAG-NIC
mnt-ref:        SYCOR-MNT
mnt-by:         SYCOR-MNT
mnt-by:         DTAG-NIC
created:        2013-05-29T05:27:23Z
last-modified:  2022-12-01T16:50:38Z
source:         RIPE # Filtered

person:         Cedrik Luebke
address:        Heinrich-von-Stephan-Stra�e 1-5, 37073 G�ttingen
phone:          +49 551 4902158
nic-hdl:        CL10711-RIPE
mnt-by:         SYCOR-MNT
created:        2025-11-21T08:57:47Z
last-modified:  2025-11-21T08:57:47Z
source:         RIPE

person:         Michael Kunze
address:        SYCOR AG
address:        Heinrich-von-Stephan-Str. 1-5
address:        37073 Goettingen
address:        Germany
phone:          +49 551 490 0
fax-no:         +49 551 490 2000
nic-hdl:        MK2769-RIPE
mnt-by:         CIP-MNT
created:        2002-09-23T13:50:21Z
last-modified:  2008-01-07T16:51:38Z
source:         RIPE # Filtered

person:         Michael Kunze
address:        SYCOR GmbH
address:        Heinrich-von-Stephan-Str. 1-5
address:        37073 Goettingen
address:        Germany
phone:          +49 551 490 0
fax-no:         +49 551 490 2000
nic-hdl:        SYMK1-RIPE
mnt-by:         SYCOR-MNT
created:        2005-08-30T08:57:17Z
last-modified:  2005-08-30T08:57:17Z
source:         RIPE # Filtered

person:         Ruediger Krumes
address:        SYCOR GmbH
address:        Heinrich-von-Stephan-Str. 1-5
address:        37073 Goettingen
address:        Germany
phone:          +49 551 490 0
fax-no:         +49 551 490 2000
nic-hdl:        SYRK1-RIPE
mnt-by:         SYCOR-MNT
created:        2005-08-30T09:01:28Z
last-modified:  2005-08-30T09:01:28Z
source:         RIPE # Filtered

person:         Thomas Ahlers
address:        Heinrich-von-Stephan-Strasse 1-5, 37073 Goettingen
phone:          +49551490
nic-hdl:        SYTA1-RIPE
mnt-by:         SYCOR-MNT
created:        2024-09-02T07:20:50Z
last-modified:  2024-09-02T07:20:50Z
source:         RIPE

% 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" : "AS25365 - AS25542",
    "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" : "AS25481",
    "as_name" : "SYCOR",
    "status" : "ASSIGNED",
    "import" : [ "from AS8472 action pref=190; accept ANY", "from AS702 action pref=205; accept ANY", "from AS3320 action pref=195; accept ANY", "from AS15830 action pref=195; accept ANY" ],
    "export" : [ "to AS8472 announce AS25481", "to AS702 announce AS25481", "to AS3320 announce AS25481", "to AS15830 announce AS25481" ],
    "default" : [ "to AS8472" ],
    "organization" : "ORG-SG113-RIPE",
    "sponsoring_organization" : "ORG-DTA2-RIPE",
    "admin_contacts" : [ "MK2769-RIPE", "SYMK1-RIPE", "SYTA1-RIPE", "SYRK1-RIPE" ],
    "tech_contacts" : [ "MK2769-RIPE", "CL10711-RIPE", "SYMK1-RIPE" ],
    "abuse_contacts" : [ "AR20276-RIPE" ],
    "remarks" : [ "as for dual homed internet" ],
    "mnt_by" : [ "RIPE-NCC-END-MNT", "SYCOR-MNT" ],
    "date_created" : "2002-12-05",
    "date_updated" : "2025-11-21",
    "source" : "RIPE"
  } ],
  "organization" : {
    "handle" : "ORG-SG113-RIPE",
    "name" : "SYCOR GmbH",
    "type" : "OTHER",
    "address" : [ "Heinrich-von-Stephan-Str. 1-5", "D-37073 Goettingen" ],
    "street" : "Heinrich-von-stephan-str.",
    "city" : "Goettingen",
    "zip_code" : "D-37073",
    "country" : [ "DE" ],
    "abuse_contacts" : [ "AR20276-RIPE" ],
    "mnt_ref" : [ "DTAG-NIC", "SYCOR-MNT" ],
    "mnt_by" : [ "SYCOR-MNT", "DTAG-NIC" ],
    "date_created" : "2013-05-29",
    "date_updated" : "2022-12-01",
    "source" : "RIPE"
  },
  "administrative_contacts" : [ {
    "handle" : "MK2769-RIPE",
    "name" : "Michael Kunze",
    "address" : [ "SYCOR AG", "Heinrich-von-Stephan-Str. 1-5", "37073 Goettingen", "Germany" ],
    "street" : "Heinrich-von-stephan-str.",
    "city" : "Goettingen",
    "zip_code" : "37073",
    "country" : "GERMANY",
    "phone" : [ "+49 551 490 0" ],
    "fax_no" : [ "+49 551 490 2000" ],
    "mnt_by" : [ "CIP-MNT" ],
    "date_created" : "2002-09-23",
    "date_updated" : "2008-01-07",
    "source" : "RIPE",
    "addressCountry" : "GERMANY"
  }, {
    "handle" : "SYMK1-RIPE",
    "name" : "Michael Kunze",
    "address" : [ "SYCOR GmbH", "Heinrich-von-Stephan-Str. 1-5", "37073 Goettingen", "Germany" ],
    "street" : "Heinrich-von-stephan-str.",
    "city" : "Goettingen",
    "zip_code" : "37073",
    "country" : "GERMANY",
    "phone" : [ "+49 551 490 0" ],
    "fax_no" : [ "+49 551 490 2000" ],
    "mnt_by" : [ "SYCOR-MNT" ],
    "date_created" : "2005-08-30",
    "date_updated" : "2005-08-30",
    "source" : "RIPE",
    "addressCountry" : "GERMANY"
  }, {
    "handle" : "SYTA1-RIPE",
    "name" : "Thomas Ahlers",
    "address" : [ "Heinrich-von-Stephan-Strasse 1-5, 37073 Goettingen" ],
    "street" : "Heinrich-von-stephan-strasse",
    "city" : "Goettingen",
    "zip_code" : "37073",
    "phone" : [ "+49551490" ],
    "mnt_by" : [ "SYCOR-MNT" ],
    "date_created" : "2024-09-02",
    "date_updated" : "2024-09-02",
    "source" : "RIPE"
  }, {
    "handle" : "SYRK1-RIPE",
    "name" : "Ruediger Krumes",
    "address" : [ "SYCOR GmbH", "Heinrich-von-Stephan-Str. 1-5", "37073 Goettingen", "Germany" ],
    "street" : "Heinrich-von-stephan-str.",
    "city" : "Goettingen",
    "zip_code" : "37073",
    "country" : "GERMANY",
    "phone" : [ "+49 551 490 0" ],
    "fax_no" : [ "+49 551 490 2000" ],
    "mnt_by" : [ "SYCOR-MNT" ],
    "date_created" : "2005-08-30",
    "date_updated" : "2005-08-30",
    "source" : "RIPE",
    "addressCountry" : "GERMANY"
  } ],
  "technical_contacts" : [ {
    "handle" : "MK2769-RIPE",
    "name" : "Michael Kunze",
    "address" : [ "SYCOR AG", "Heinrich-von-Stephan-Str. 1-5", "37073 Goettingen", "Germany" ],
    "street" : "Heinrich-von-stephan-str.",
    "city" : "Goettingen",
    "zip_code" : "37073",
    "country" : "GERMANY",
    "phone" : [ "+49 551 490 0" ],
    "fax_no" : [ "+49 551 490 2000" ],
    "mnt_by" : [ "CIP-MNT" ],
    "date_created" : "2002-09-23",
    "date_updated" : "2008-01-07",
    "source" : "RIPE",
    "addressCountry" : "GERMANY"
  }, {
    "handle" : "CL10711-RIPE",
    "name" : "Cedrik Luebke",
    "address" : [ "Heinrich-von-Stephan-Stra?e 1-5, 37073 G?ttingen" ],
    "street" : "G?ttingen",
    "phone" : [ "+49 551 4902158" ],
    "mnt_by" : [ "SYCOR-MNT" ],
    "date_created" : "2025-11-21",
    "date_updated" : "2025-11-21",
    "source" : "RIPE"
  }, {
    "handle" : "SYMK1-RIPE",
    "name" : "Michael Kunze",
    "address" : [ "SYCOR GmbH", "Heinrich-von-Stephan-Str. 1-5", "37073 Goettingen", "Germany" ],
    "street" : "Heinrich-von-stephan-str.",
    "city" : "Goettingen",
    "zip_code" : "37073",
    "country" : "GERMANY",
    "phone" : [ "+49 551 490 0" ],
    "fax_no" : [ "+49 551 490 2000" ],
    "mnt_by" : [ "SYCOR-MNT" ],
    "date_created" : "2005-08-30",
    "date_updated" : "2005-08-30",
    "source" : "RIPE",
    "addressCountry" : "GERMANY"
  } ]
}

Peers

AS Number	Description	Country
AS15830	Equinix EMEA Acquisition Enterprises B.V.	NL
AS702	Verizon Business	US
AS15830	Equinix (EMEA) Acquisition Enterprises B.V.	NL
AS3320	Deutsche Telekom AG	DE
AS8472	British Telecommunications PLC	GB

Upstreams

AS Number	Description	Country
AS15830	Equinix EMEA Acquisition Enterprises B.V.	NL