ASN AS5501 is an Autonomous System Number used to identify a network for BGP internet routing.

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?

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AS5501 Fraunhofer Gesellschaft zur Foerderung der angewandten Forschung e.V.

Q: Who manages ASN AS5501?

AS5501 is listed under Fraunhofer Gesellschaft zur Foerderung der angewandten Forschung e.V..

Fraunhofer Gesellschaft zur Foerderung der angewandten Forschung e.V. iosb.fraunhofer.de

DE 51 Routes

AS Data

AS5501

AS5501 – Fraunhofer Gesellschaft zur Foerderung der angewandten Forschung e.V.

AS Number	5501
AS Name	Fraunhofer-Cluster-BW
Organization	Fraunhofer Gesellschaft zur Foerderung der angewandten Forschung e.V. (org-fzfd2-ripe)
Country	DE
Website	iosb.fraunhofer.de
Number of IPv4 Routes	38
Number of IPv6 Routes	13
ASN type	BUSINESS
Allocation Status	ASSIGNED
Registry	RIPE
Date Allocated	2002-01-18

ASN Intelligence API for production workflows

Use ASN data for AS5501 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

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IP Ranges

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 'AS5377 - AS5535'

as-block:       AS5377 - AS5535
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:        2018-11-22T15:27:22Z
last-modified:  2018-11-22T15:27:22Z
source:         RIPE

% Information related to 'AS5501'

% Abuse contact for 'AS5501' is 'noc-services@iosb.fraunhofer.de'

aut-num:        AS5501
as-name:        Fraunhofer-Cluster-BW
descr:          Research Institutes spread all over Germany
descr:          main network node located in Karlsruhe
org:            ORG-FzFd2-RIPE
import:         from AS553 accept AS553
export:         to AS553 announce AS5501
import:         from AS680 accept AS680
import:         from AS13045 accept ANY
export:         to AS13045 announce AS5501
export:         to AS680 announce AS5501
admin-c:        FN413-RIPE
tech-c:         FT518-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         FhG-MNT
mnt-by:         MNT-FHG-LIR
created:        2002-01-18T16:49:40Z
last-modified:  2024-07-02T08:10:28Z
source:         RIPE # Filtered

organisation:   ORG-FzFd2-RIPE
org-name:       Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
country:        DE
reg-nr:         District court M�nchen VR 4461
org-type:       LIR
address:        Fraunhoferstr.1
address:        76131
address:        Karlsruhe
address:        GERMANY
phone:          +4972160910
fax-no:         +497216091413
mnt-ref:        HS96391-MNT
mnt-ref:        MNT-FHG-LIR
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         MNT-FHG-LIR
abuse-c:        FHG20-RIPE
created:        2011-11-04T11:49:46Z
last-modified:  2026-05-13T07:33:55Z
source:         RIPE # Filtered

role:           Fraunhofer Netzzentrum
address:        Institut fuer Optronik, Systemtechnik und Bildauswertung IOSB
address:        Fraunhoferstrasse 1
address:        76131 Karlsruhe
address:        Germany
phone:          +49 721 6091 0
fax-no:         +49 721 6091 413
abuse-mailbox:  noc-services@iosb.fraunhofer.de
admin-c:        FII4-RIPE
tech-c:         FII4-RIPE
nic-hdl:        FN413-RIPE
mnt-by:         FhG-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2014-03-28T14:14:37Z
source:         RIPE # Filtered

role:           FhG-NOC Tech-Admin
address:        Institut fuer Optronik, Systemtechnik und Bildauswertung IOSB
address:        Fraunhoferstrasse 1
address:        76131 Karlsruhe
address:        Germany
phone:          +49 721 6091 0
fax-no:         +49 721 6091 413
admin-c:        FII4-RIPE
tech-c:         FII4-RIPE
nic-hdl:        FT518-RIPE
mnt-by:         FhG-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2011-07-13T08:25:41Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.123 (DEXTER)

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.ripe.net",
  "as_blocks" : [ {
    "as_block" : "AS5377 - AS5535",
    "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" : "AS5501",
    "as_name" : "Fraunhofer-Cluster-BW",
    "description" : [ "Research Institutes spread all over Germany", "main network node located in Karlsruhe" ],
    "status" : "ASSIGNED",
    "import" : [ "from AS553 accept AS553", "from AS680 accept AS680", "from AS13045 accept ANY" ],
    "export" : [ "to AS553 announce AS5501", "to AS13045 announce AS5501", "to AS680 announce AS5501" ],
    "organization" : "ORG-FzFd2-RIPE",
    "admin_contacts" : [ "FN413-RIPE" ],
    "tech_contacts" : [ "FT518-RIPE" ],
    "mnt_by" : [ "RIPE-NCC-END-MNT", "FhG-MNT", "MNT-FHG-LIR" ],
    "date_created" : "2002-01-18",
    "date_updated" : "2024-07-02",
    "source" : "RIPE"
  } ],
  "organization" : {
    "handle" : "ORG-FzFd2-RIPE",
    "name" : "Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.",
    "type" : "LIR",
    "address" : [ "Fraunhoferstr.1", "76131", "Karlsruhe", "GERMANY" ],
    "city" : "Karlsruhe",
    "zip_code" : "76131",
    "country" : [ "DE" ],
    "phone" : [ "+4972160910" ],
    "fax_no" : [ "+497216091413" ],
    "abuse_contacts" : [ "FHG20-RIPE" ],
    "mnt_ref" : [ "HS96391-MNT", "MNT-FHG-LIR", "RIPE-NCC-HM-MNT" ],
    "mnt_by" : [ "RIPE-NCC-HM-MNT", "MNT-FHG-LIR" ],
    "date_created" : "2011-11-04",
    "date_updated" : "2026-05-13",
    "source" : "RIPE",
    "addressCountry" : "GERMANY"
  },
  "administrative_contacts" : [ {
    "handle" : "FN413-RIPE",
    "name" : "Fraunhofer Netzzentrum",
    "address" : [ "Institut fuer Optronik, Systemtechnik und Bildauswertung IOSB", "Fraunhoferstrasse 1", "76131 Karlsruhe", "Germany" ],
    "street" : "Fraunhoferstrasse",
    "city" : "Karlsruhe",
    "zip_code" : "76131",
    "country" : "GERMANY",
    "abuse_mailbox" : [ "noc-services@iosb.fraunhofer.de" ],
    "phone" : [ "+49 721 6091 0" ],
    "fax_no" : [ "+49 721 6091 413" ],
    "admin_contacts" : [ "FII4-RIPE" ],
    "tech_contacts" : [ "FII4-RIPE" ],
    "mnt_by" : [ "FhG-MNT" ],
    "date_created" : "1970-01-01",
    "date_updated" : "2014-03-28",
    "source" : "RIPE",
    "addressCountry" : "GERMANY"
  } ],
  "technical_contacts" : [ {
    "handle" : "FT518-RIPE",
    "name" : "FhG-NOC Tech-Admin",
    "address" : [ "Institut fuer Optronik, Systemtechnik und Bildauswertung IOSB", "Fraunhoferstrasse 1", "76131 Karlsruhe", "Germany" ],
    "street" : "Fraunhoferstrasse",
    "city" : "Karlsruhe",
    "zip_code" : "76131",
    "country" : "GERMANY",
    "phone" : [ "+49 721 6091 0" ],
    "fax_no" : [ "+49 721 6091 413" ],
    "admin_contacts" : [ "FII4-RIPE" ],
    "tech_contacts" : [ "FII4-RIPE" ],
    "mnt_by" : [ "FhG-MNT" ],
    "date_created" : "1970-01-01",
    "date_updated" : "2011-07-13",
    "source" : "RIPE",
    "addressCountry" : "GERMANY"
  } ]
}

Peers

AS Number	Description	Country
AS13045	htp GmbH	DE
AS680	Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.	DE
AS553	BelWue Koordination	DE
AS553	Universitaet Stuttgart	DE

Upstreams

AS Number	Description	Country
AS13045	htp GmbH	DE
AS680	Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.	DE
AS553	BelWue Koordination	DE

Contacts

Email Contacts

noc-services@iosb.fraunhofer.de

Abuse Contacts