
This AS is not currently used to announce prefixes in the global routing table, nor is it used as a visible transit AS.
whois: 402603
IANA has recorded AS5520 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS5520\n % 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.
% 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 'AS5520'
% Abuse contact for 'AS5520' is 'abuse@uni-koeln.de'
aut-num: AS5520
abuse-c: IUZK1-RIPE
as-name: UNI-KOELN
org: ORG-UzK1-RIPE
import: from AS8422 action pref=75; accept AS8422 AS13282
export: to AS8422 announce AS5520
default: to AS8422
admin-c: IUZK1-RIPE
tech-c: IUZK1-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
tech-c: SH13036-RIPE
mnt-by: AS5520-MNT
created: 2002-02-04T14:45:39Z
last-modified: 2022-07-26T10:39:33Z
source: RIPE # Filtered
organisation: ORG-UzK1-RIPE
org-name: Universitaet zu Koeln
country: DE
reg-nr: Not Applicable
org-type: LIR
address: Weyertal 121
address: 50931
address: Koeln
address: GERMANY
phone: +4922147089555
admin-c: SH13036-RIPE
admin-c: GB24861-RIPE
tech-c: SH13036-RIPE
abuse-c: AR14768-RIPE
mnt-ref: RIPE-NCC-HM-MNT
mnt-ref: AS5520-MNT
mnt-by: RIPE-NCC-HM-MNT
mnt-by: AS5520-MNT
created: 2010-11-10T10:28:58Z
last-modified: 2026-05-13T07:33:00Z
source: RIPE # Filtered
role: ITCC Universitaet zu Koeln
address: Universitaet zu Koeln
address: ITCC, Abteilung Netzwerk-Infrastruktur
address: Weyertal 121
address: 50931 Koeln
nic-hdl: IUZK1-RIPE
mnt-by: AS5520-MNT
created: 2022-07-26T10:23:31Z
last-modified: 2022-07-26T10:26:39Z
source: RIPE # Filtered
abuse-mailbox: abuse@uni-koeln.de
phone: +49 221 470-89555
%ERROR:201: access denied for 2401:2000:6660:0:0:0:0:13
%
% Queries from your IP address have passed the daily limit of controlled objects.
% Access from your host has been temporarily denied.
% For more information, see
% https://docs.db.ripe.net/FAQ#why-did-i-receive-an-error-201-access-denied
% This query was served by the RIPE Database Query Service version 1.122.1 (DEXTER)